Product Reviews and Information for Kidney Stones
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CL Answer
Which supplements and foods reduce or increase the risk of kidney stones?
Find out which supplements, foods and beverages may increase or decrease the risk of kidney stones, including information about potassium, calcium, choline, turmeric and curcumin, vitamin C, as well as foods and beverages such as green tea, lemon juice, orange juice, cranberry juice, chocolate and almonds.
CL Answer
Can taking certain forms of potassium, such as potassium citrate, reduce my chances of getting kidney stones? I've read a study that says it can, but it's unclear how much I should take.
Potassium citrate for kidney stones - can it help? Find out if you can reduce the risk of kidney stones with Potassium citrate.
Product Review
Calcium and Bone Health Supplements Review (Including Vitamins D & K, Magnesium and Boron)
See Which Bone Health Supplements Are Top Picks and Which Fail
CL Answer
Can lemon juice, lemonade, or other juices reduce my chances of getting kidney stones?
Information about lemon juice, lemonade, orange juice, cranberry juice and other juices for increasing urinary citrate and reducing the risk of kidney stones.
CL Answer
Can cocoa and chocolate cause kidney stones?
Find out if cocoa and chocolate can cause kidney stones, such as calcium oxalate kidney stones, the amount of oxalates found in cocoa powders and chocolate bars, and more. ConsumerLab.com's answer explains.
CL Answer
Can coconut water prevent or dissolve kidney stones?
Find out if coconut water can help prevent kidney stones, or dissolve them, by increasing urinary citrate, or if there are better ways. ConsumerLab.com's answer explains.
CL Answer
Can vitamin C or other supplements cause blood in the urine and painful urination?
Find out if vitamin C or other supplements including cranberry, garlic, and vitamin D can cause bloody or painful urination.
CL Answer
Do turmeric and curcumin supplements contain significant amounts of oxalates? Can this increase my risk of kidney stones?
Find out if turmeric and curcumin supplements can increase the risk of kidney stones. ConsumerLab.com's answer explains.
CL Answer
Does taking one slow-release calcium tablet of 600 mg (such as Citracal) per day pose a risk for heart disease?
Does taking slow release calcium supplement (such as Citracal slow release) pose a risk for heart attack or kidney stones?
Product Review
Potassium Supplements Review
Be Careful with Potassium Supplements! Problems Found. Tests and Reviews of Potassium Supplements & CL's Top Picks.
CL Answer
Is it possible to take too much vitamin C?
Find out the daily value of vitamin C, along with possible side effects of excessive vitamin C intake. ConsumerLab explores the topic of proper vitamin C supplement usage, and why taking too much can be harmful.
Product Review
Cranberry Juices and Supplements Review
CL's Tests Show Which Cranberry Juices and Supplements Are Best and Cost the Least
Product Review
Vitamin C Supplements Review
Find the Best Vitamin C Supplements
Clinical Update
8/18/2023
Oxalates, Calcium, and Kidney Stones
We recently published a list of foods high in oxalate, of concern to some people with kidney stones, but be aware that overly restrictive low-oxalate diets are generally not recommended. Also learn how calcium intake affects risk, in our updated article about kidney stones.
Clinical Update
5/12/2020
Low-Cal Orange Juice For Kidney Stones?
Increasing citrate intake may reduce the risk of kidney stones. Find out how effective low-cal orange juice is at increasing citrate in our answer to the question: Can lemon juice, lemonade, or other juices reduce my chances of getting kidney stones?
Clinical Update
12/17/2021
Chanca Piedra and Kidney Stones
Can supplementing with the herb chanca piedra help break up kidney stones? Find out.
Clinical Update
7/31/2021
Juices for Kidney Stones?
Are cranberry juice or apple cider vinegar good sources of citrate to lower the risk of kidney stones? Find out in our updated answer to the question: Can lemon juice, lemonade, or other juices reduce my chances of getting kidney stones?
Clinical Update
3/25/2022
Hydroxycitrate for Kidney Stones?
Can supplementing with hydroxycitrate (HCA) help prevent or treat kidney stones? Find out what research shows in the What It Does section of our Garcinia Cambogia Review.
Also see our answer to the question: Can any supplements reduce or increase the risk of kidney stones?
Clinical Update
6/17/2022
Vitamin C & Kidney Stones
High intake of vitamin C has been linked with an increased risk of kidney stones, but is the risk similar among men vs women?
Clinical Update
9/23/2022
Plant "Meats" & Kidney Stones
Some plant-based "meats" may increase the risk of kidney stones, according to a recent study. Find out which sources of plant-based meats pose the greatest risk in our CL Answer about foods and supplements that may increase the risk of kidney stones.
CL Answer
What are the health benefits of green tea, and is it safe?
ConsumerLab explains green tea's potential health benefits for everything from fighting cancer to helping your heart.
CL Answer
Are cranberry supplements helpful for men? Can they help with symptoms of an enlarged prostate, prostatitis, or urinary tract infections?
Learn more about how cranberry pills, cranberries, cranberry juice and supplements can help prevent urinary tract infections.
Product Review
Plant-Based Milks Review (Almond, Cashew, Coconut, Flax, Hemp, Macadamia, Oat, Pea, and Soy)
Find the Best Non-Dairy Milk Alternative. ConsumerLab Tests Reveal What's Really In Plant-Based Milks.
Product Review
Green Tea Review: Tea Bags, Matcha Powders, and Supplements
Some green teas provide barely any green tea polyphenols, while some others are high strength. See the Test Results and Our Top Picks for Green Tea.
Clinical Update
9/28/2021
Potassium for Kidney Stones?
Can taking certain forms of potassium help dissolve or prevent kidney stones? Find out in the What It Does section of our Potassium Supplements Review. Also see our Top Picks among potassium supplements.
Clinical Update
5/29/2021
Plant Milks and Kidney Stones
Do almond, cashew, oat, soy or other plant-based milks increase the risk of kidney stones due to their oxalates? Find out in the Concerns and Cautions section of our Plant-Based Milks Review and see which carry the highest risk. Also see our Top Picks among plant-based milks.
Clinical Update
12/17/2021
Lemon Juice and Kidney Stones
Drinking lemon juice daily may help prevent kidney stones but there is a downside, according to a recent, two-year study. Get the details in our updated answer about Juices That May Reduce Kidney Stone Risk.
Clinical Update
12/17/2021
Calcium and Kidney Stone Risk
Getting too much calcium from supplements may increase risk of kidney stones, while getting too little calcium from foods may increase the risk. Find out how much calcium you should be getting in our updated answer to the question: Can any supplements reduce or increase the risk of kidney stones?
Clinical Update
1/27/2024
Alkaline Water for Kidney Stones?
People who have had kidney stones may be advised to consume foods and supplements that alkalize their urine. Find out if “alkaline water” might help in our article about supplements, foods, and kidney stone risk.
Clinical Update
1/06/2023
Coffee, Milk, and Kidney Stones
Does drinking coffee, or adding milk to it, increase the risk of kidney stones? Find out in our CL Answer about foods, supplements, and kidney stone risk.
Clinical Update
3/21/2023
Avoiding Oxalates in Turmeric?
Oxalates can promote the formation of kidney stones and are found in turmeric supplements. However, this is not an issue with many curcumin supplements, as discussed in the Concerns and Cautions section of our Turmeric and Curcumin Supplements Review, which includes our Top Picks for turmeric and curcumin.
Also see our article about supplements that increase or reduce the risk of kidney stones.
Clinical Update
8/15/2023
Foods High in Oxalate
People with a history of kidney stones often benefit from limiting intake of oxalates. Find out which foods have the highest amounts in our updated table, and learn about supplements that may reduce or increase the risk of kidney stones.
Clinical Update
10/18/2024
Vitamin C & Kidney Injury
Be aware that high-dose vitamin C can contribute to kidney stones in some people and even cause kidney injury as highlighted in our Vitamin C Supplements Review, which includes our Top Picks for vitamin C.
Also see: Which supplements and foods reduce or increase the risk of kidney stones?
CL Answer
It is okay to add milk to green tea?
Find out if adding milk to green tea decreases the health benefits of green tea, reduces the bioavailability of tea catechins such as EGCG or has other effects. ConsumerLab.com's answer explains.
Product Review
Coconut Waters Review
Best Coconut Water? See Our Tests and Comparisons of Popular Brands Looking at Sugar, Electrolytes, Taste and Price.
Product Review
Vitamin D Supplements Review (Including Calcium, Magnesium, Vitamin K, and Boron)
Find the Best Vitamin D Supplement and Avoid Problems
CL Answer
My doctor told me to stop taking supplements because my kidney function was low. After stopping, my kidney function returned to normal. Can taking a lot of supplements really damage the kidneys?
Find out which supplements may damage your kidneys. ConsumerLab explores possible kidney side effects of supplements including chromium, creatine, and vitamin C.
Product Review
Dark Chocolates, Cocoa & Cacao Powders, Nibs, and Supplements Review -- Sources of Flavanols
Is Your Chocolate or Cocoa Healthful or Toxic? Find the Best Dark Chocolate, Cocoa Powder and Cocoa Supplements Based On Our Tests.
Product Review
Choline and Lecithin Supplements Review (Including Phosphatidylcholine, CDP-Choline, and Alpha-GPC)
Choose the Best Choline Supplement. Find Out How Much Choline Popular Supplements Really Provide.
Clinical Update
9/09/2022
Kidney Stone Supplements
Find out how kidney stone supplements compare and learn about concerns with some of them in our article about Supplements, Foods, and Kidney Stones.
Clinical Update
7/20/2011
Kidney Stones Linked to Calcium and Vitamin D Supplementation
A recent report showed that women taking a calcium and vitamin D supplement over a period of several years were 17% more likely to develop kidney stones than women who did not take the supplement. ConsumerLab.com reviewed this study. While the findings are correct, there seems to be no reason to give up vitamin D supplements and a small concern with calcium supplementation. Get the details in the update to the Calcium Supplements Review >>. The new information is also found in an update in the Vitamin D Supplements Review >>.
CL Answer
How much calcium do you need each day, what forms are best, and how much is too much?
Learn about the recommended daily intake of calcium from food & supplements and why taking too much can be harmful. Also, learn about the forms of calcium that are available and which are best.
Product Review
Turmeric and Curcumin Supplements and Spices Review
See Our Top Picks Among Turmeric Products
Product Review
Garcinia Cambogia (HCA) Supplements Review
Find the Best Garcinia Cambogia Supplement. Choose Carefully! Most Garcinia (HCA) Weight Loss Supplements Lack Listed Amount of Ingredient .
Product Review
Protein Powders, Shakes, and Meal Replacements Review
Find Out Which Protein Products Passed or Failed Our Tests
Clinical Update
5/10/2022
Caution With Kidney Stone Supplements
Many supplements promoted to prevent or dissolve kidney stones contain ingredients with little or no evidence. Get the details in our article about supplements, foods and beverages & kidney stone risk.
Product Review
Apple Cider Vinegar Review — Bottled Liquids and Supplements
Find the Best Apple Cider Vinegar. See Which Apple Cider Vinegar Liquids and Supplements Passed Our Tests of Quality.
CL Answer
How does Athletic Greens’ AG1 compare to multivitamins and Greens powders? Is AG1 worth it?
ConsumerLab reviews the ingredients in AG1, its safety and possible side effects, and how AG1 compares to other products.
Clinical Update
10/14/2015
Calcium Supplements Increase Kidney Stone Growth
Calcium supplementation is known to increase the risk of kidney stones in postmenopausal women. A new study shows that taking calcium nearly doubles the monthly growth of such stones in women prone to getting them. The study also assessed the effects of vitamin D supplementation. Details are found in the Calcium Supplements Review >>
Clinical Update
12/24/2021
Does Collagen Increase Kidney Stone Risk?
A member asked whether supplementing with collagen increases the risk of kidney stones, since collagen can produce oxalates. Find out in the Concerns and Cautions section of our Collagen Supplements Review. Also, see our Top Picks for collagen supplements.
Clinical Update
2/19/2019
Kidney Stones Due to Supplement?
An unusual type of kidney stone has been reported in several people who regularly consumed large amounts of a vitamin and amino acid supplement containing a particular form of choline and vitamin C. For details, see the Concerns and Cautions section of the Choline Supplements Review.
CL Answer
Is it safer to get calcium from foods than from supplements? How about from calcium-fortified orange juice and non-dairy milks?
Information on getting calcium naturally through food like calcium-fortified orange juice or through calcium supplements.
CL Answer
Can eating almonds reduce wrinkles or have other health benefits?
Find out if eating almonds can reduce wrinkles or improve aging skin.
CL Answer
Can beetroot juice improve my workout performance?
Find out if beetroot juice can help improve exercise endurance or performance, how it works, the clinical evidence, and cautions.. ConsumerLab.com's answer explains.
Product Review
Collagen Supplements Review
See our Top Picks for Wrinkles and Joints
Clinical Update
6/29/2021
Chia Risk
Don't overdo it with chia seeds, as they contain compounds that, in excess, can increase the risk of kidney stones and kidney injury. Get the details in the Concerns and Cautions section of our Chia Seeds Review. Also, see our Top Picks among chia products.
Clinical Update
9/16/2022
Caution with Vitamin C for COVID
Taking very high-dose vitamin C doesn’t seem to provide protection against COVID-19 and it may increase the rate of kidney stones, according to recent data. Get the details in the Vitamin C section of our CL Answer about Supplements and COVID-19.
Clinical Update
10/23/2021
Kidney Caution With Almonds
The large amount of almonds shown to slightly reduce wrinkles in recent studies could be problematic for people with a history of kidney stones. Get the details in our updated answer to the question: Can eating almonds reduce wrinkles?
Clinical Update
6/20/2014
Too Much Calcium for Some?
A new study found that supplementing with even moderate amounts of calcium may cause abnormally high calcium levels in the urine (a risk factor for kidney stones) of some postmenopausal women, even when total calcium intake doesn't exceed the recommended daily allowance. Get the details in the update to the Calcium Supplements Review (Including Vitamin D, Vitamin K, and Magnesium) >>
Clinical Update
9/11/2018
High-Dose Vitamin D Risk
A new study suggests that very high-dose vitamin D may increase the risk of kidney stones. For details, see the What It Does section of the Vitamin D Supplements Review. (Also see our Top Picks among vitamin D supplements.)
Clinical Update
12/09/2018
Vitamin C and Kidney Damage
High doses of vitamin C can cause kidney stones and damage kidneys. People with certain diets or medical conditions may be more prone to these problems. Get the details, including those of a recent case, in the Concerns and Cautions section of the Vitamin C Supplements Review.
CL Answer
Which supplements and foods help with gout and which may worsen it?
Find out about the effects on uric acid levels and gout of fish and fish oil, coffee, beer, animal meat, milk proteins, vegetable proteins, fructose, lemon juice, tart cherry juice, vitamin A, vitamin C, and niacin
CL Answer
How much calcium from supplements is too much?
Too much calcium per day - how much is too much? Learn about the recommended daily intake from food & supplements and why taking too much calcium can be harmful.
Product Review
Magnesium Supplements Review (Including Calcium, Vitamins D & K, and Boron)
Find Out What Magnesium Does, Who Needs It, and Our Top Picks Among Supplements
CL Answer
Does Z-Stack multivitamin work to boost the immune system, and is it safe?
Find out about Z-Stack, including if it can help boost the immune system and if it is safe to use at the suggested dose.
CL Answer
Is it better to get vitamins from foods or supplements, and are natural vitamins better than synthetic vitamins?
Learn more about the benefits of getting vitamins from food versus supplements, natural versus synthetic vitamins, and more.
CL Answer
Risks of Too Many Vitamins & Supplements
Taking too many vitamin supplements -- or taking too much of a particular supplement -- can have short and long-term adverse effects.
CL Answer
What are the health benefits of dark chocolate?
Information on the health benefits of dark chocolate, including how dark chocolate may improve heart health, decrease blood sugar levels and more. ConsumerLab.com's answer explains.
CL Answer
How do the Beyond Burger, the Impossible Burger, and a beef burger compare in terms of vitamins and minerals, and which is best?
Read our comparison of the Beyond Burger and the Impossible Burger, plant-based, meat alternative burgers. Compare nutrition, vitamins and minerals. ConsumerLab.com's answer explains.
CL Answer
Can beetroot juice or supplements lower blood pressure or improve exercise performance, and are they safe?
Learn more about beetroot juice and beetroot supplements and if beetroot can really help lower blood pressure.
Recalls & Warnings
July 21, 2022
Young Living Warned for Promoting Essential Oils to Treat Seasonal Allergies, Kidney Stones & More
On June 10, 2022, the FDA issued a warning letter to Young Living Essential Oils Corporate after an inspection of the company’s website and social media found statements about the company’s essential oil and CBD products to be drug claims.
Recalls & Warnings
May 30, 2024
Young Living Essential Oils Agrees to Pay $5 Million to Settle Lawsuit
Young Living Essential Oils has agreed to pay up to $5 million to settle a class action lawsuit that charged the company with promoting its essential oils to reduce stress and anxiety, improve sleep, and other health-related claims without reliable scientific evidence.
Recalls & Warnings
March 23, 2023
FDA Warns Herbal Vitality for Promoting Supplements to Treat Cold & Flu, Kidney Stones & More
On March 7, 2023, the FDA issued a warning letter to Herbal Vitality, Inc.
Product Review
Chia Seed Review — Whole, Ground, and Sprouted Seed, Seed Flour, & Supplements
Find the Best Chia Seeds, Sprouted Chia Powder, Flour, and Chia Supplements. Tests and Reviews of Chia Seeds & CL's Top Picks.
CL Answer
Are plant-based calcium supplements, like AlgaeCal, better than regular calcium supplements?
Info about AlgaeCal, a plant-based calcium supplement. See the clinical evidence and safety information, including possible presence of excessive lead.
Product Review
Lion's Mane and Chaga Supplements Review
Read Labels Carefully -- Many Can Mislead
CL Answer
Dandelion Tea & Supplements: Health Benefits and Safety
Find out about the potential health benefits of dandelion tea and supplements, as well as safety, side effects, and potential drug interactions.
CL Answer
What is Prelief? Does it really help for heartburn and/or bladder pain from acidic foods?
Prelief information, including what it has been claimed to do (such as helping with painful bladder, frequent urination, heartburn or indigestion from acidic foods), clinical evidence, and safety.
News Release
December 13, 2023
Best Vitamin C Supplements? ConsumerLab Selects Its Top Picks
White Plains, New York, December 13, 2023 — It’s officially cold season in the U.S., a time when many people may turn to vitamin C supplements to help “boost” their immune system and ward off colds.
CL Answer
Does Rooibos Tea Have Health Benefits and Is It Safe?
Learn about the health benefits of rooibos tea, including red and green, unfermented rooibos tea, how is differs from black and green tea, safety, and potential drug interactions with rooibos tea.
Product Review
Joint Health Supplements Review (Glucosamine, Chondroitin, MSM, Boswellia, Collagen and Turmeric)
One-Third of Joint Health Supplements Failed to Pass Our Tests. See Which Passed or Failed, and our Top Picks.
Recalls & Warnings
July 22, 2022
FDA Warns Seller of Vision, Calcium & Magnesium Supplements and More
On June 14, 2022, the FDA issued a warning letter to New Sun Inc. following inspection of the company’s website which found statements about the company’s products to be drug claims.
Recalls & Warnings
August 16, 2023
FDA Warns Hekma Center, LLC for Promoting Products to Treat Anemia, Diabetes, Depression, & More
On June 2, 2023, the FDA issued a warning letter to Hekma Center, LLC following review of the company’s website and social media, which found statements about the company’s Natural Supplements for Anemia, Lymf (Galium aparine), Natural Supplements for Cardiomyopathy, Magic1 (Moringa ...
CL Answer
Is Relief Factor likely to relieve aches and pains, and is it safe?
Find out if the dietary supplement Relief Factor is likely to help relieve aches and pains, if it is safe, and if it is worth the cost.
CL Answer
8 Supplements That May Help Treat Peptic Ulcers – And Some to Avoid
Peptic ulcers caused by H. pylori infection are typically treated with antibiotics, but certain supplements may also help. Find out which 8 supplements might be beneficial - and which should be avoided.
Recalls & Warnings
November 09, 2023
InnoMark Warned for Manufacturing & Misbranding Violations
On September 1, 2023, the FDA issued a Warning Letter to InnoMark, Inc.
Recalls & Warnings
June 13, 2024
Thyroid Supplement Recalled Due to Salmonella
On June 11, 2024, Penn Herb Company Ltd issued a recall of 51 bottles of Nature’s Wonderland Thyroid Formula capsules after FDA testing revealed the products to be contaminated with Salmonella.
Recalls & Warnings
June 27, 2024
“Authentic” Rose Oil Often Is Not
Damask rose essential oil (Rosa × damascene) and products claiming to contain this oil, or “authentic rose oil” may often be adulterated or contain less expensive oils instead, according to a recent bulletin from the American Botanical Association (ABC).
CL Answer
What are the best supplements for depression and anxiety?
Best natural supplements for depression and anxiety, including the evidence for fish oil, vitamin D, probiotics, and herbal supplements for depression such as curcumin (from turmeric) and saffron.
CL Answer
I've heard that soaking dried beans for 24 hours reduces the phytate level, allowing for greater access to nutrients. Is this true?
Does soaking dried beans in water help reduce phytate levels to help gain greater access to nutrients?
CL Answer
Do any supplements or diets help prevent or treat osteoporosis?
If you have osteoporosis, you may be interested in supplements or diets for bone health. Find out which can increase bone strength and density.
News Release
June 06, 2020
Best Vitamin C Supplements Revealed by ConsumerLab
White Plains, New York, June 6, 2020 — Due to its role in maintaining immune system health, vitamin C has been promoted to help prevent and treat COVID-19, as well as other viral infections such as colds.
CL Answer
Are people with kidney disease at risk of getting too much potassium if they take a multivitamin? Which multivitamins are best for people with kidney disease?
Learn if people with kidney disease are at increased risk of getting too much potassium from multivitamins, find out which multivitamins do not contain potassium, and learn what other products should be avoided by people restricting potassium intake.
CL Answer
Can white kidney bean extract really help me lose weight?
Does white kidney bean extract help promote weight loss? Find out more including evidence from clinical studies and dosage.
Recalls & Warnings
May 09, 2022
$149 Million in Refunds from AdvoCare Settlement
On May 5, 2022, the FTC announced it will be returning more than $149 million to individuals who sold AdvoCare supplements as distributors through the company’s multi-level-marketing (MLM) plan.
Recalls & Warnings
August 16, 2023
FDA Warns Sun Ten Laboratories for Manufacturing Violations, Drug Claims
On April 7, 2023, the FDA issued a warning letter to STPCA Inc. dba Sun Ten Laboratories because products were found to be adulterated because they were prepared, packed, or held under conditions that do not meet Current Good Manufacturing Practices (CGMP).
Recalls & Warnings
July 20, 2023
FTC Files Complaint Against Company Promoting “Sobrenix” Supplements for Alcohol Cravings
On July 19, 2023, the FTC filed a complaint against Rejuvica and the company owners for promoting its Sobrenix supplements, which contain ingredients such as vitamin B6, thiamin, milk thistle, Chanca Piedra, and dandelion root, to reduce and eliminate alcohol cravings and consumption.
Recalls & Warnings
September 21, 2023
Moor Herbs, Inc Warned for Manufacturing Violations, Drug Claims
On August 1, 2023, the FDA issued a Warning Letter to Moor Herbs, Inc.
CL Answer
Does taking creatine affect tests for creatinine in urine samples or creatine kinase in blood samples?
Find out if creatine can affect creatinine levels and kidney function and whether creatine affects creatine kinase activity, a measure of muscle injury.
News Release
April 25, 2019
Best Coconut Water? ConsumerLab Tests Popular Products, Reveals Top Pick
White Plains, New York, April 25, 2019 — Coconut water is often promoted as a healthy way to stay hydrated and a natural alternative to sports drinks.
News Release
May 26, 2017
ConsumerLab.com Tests Reveal the Best Calcium Supplements
White Plains, New York, May 26, 2017 — Most people know that calcium is important for building and maintaining strong bones, but with so many different forms, dosages and ingredient combinations available on the market, choosing a calcium supplement can be difficult. To help, ConsumerLab.
CL Answer
Does urolithin A reduce age-related muscle decline or improve osteoarthritis?
Find out if urolithin A may improve age-related muscle decline and learn about its safety.
CL Answer
Is MitoQ a better form of CoQ10?
MitoQ information, including how it is absorbed in the body and how it compares to CoQ10.
CL Answer
I've been taking a Daily Advantage multi but am now concerned by the very high % DV for vitamin C (833% DV), niacin (325% DV), and B vitamins (over 1,000% DV for several). What do you think?
Learn about the safety of taking multivitamins containing far more than Daily Values, including upper and lower limits for nutrients.
News Release
March 15, 2017
ConsumerLab.com Reveals Best and Worst Vitamin C Supplements -- 20% Fail ConsumerLab.com Tests of Quality
White Plains, New York, March 15, 2017 — Many people take large doses of vitamin C believing it will improve their health, prevent colds or reduce the risk of disease — but will it really? And when choosing a vitamin C supplement, can consumers be sure it contains what it claims? To ...
CL Answer
Does ergothioneine help prevent age-related problems such as impaired cognition, Alzheimer’s disease, Parkinson’s disease or cataract, and is it safe?
Learn about ergothioneine and its potential use for cognitive impairment, dementia, Alzheimer's disease, Parkinson's disease, cataract, or kidney disease, as well as its safety and cost of supplements containing this ingredient.
CL Answer
My doctor warned me that red yeast rice can cause liver damage - is that true?
Can red yeast rice cause liver damage? More information on its effects, including possible danger to the liver and kidneys.
CL Answer
Is it true that calcium citrate increases the absorption of aluminum?
Find out how calcium citrate can impact the absorption of aluminum in your body and if this is a problem for your health.
News Release
February 13, 2014
Calcium, Vitamin C, and Fish Oil Supplements Drop in Use, Probiotics Rise According to ConsumerLab.com Survey
White Plains, New York, February 13, 2014 — A recent survey of over 10,000 people who use dietary supplements shows that the use of calcium, vitamin C and fish oil supplements fell during 2013 while the use of probiotics increased.
News Release
January 29, 2014
You May Be Getting More Vitamin C Than You Think from Some Supplements, Cautions ConsumerLab.com -- 27% of Vitamin C Supplements Don't Meet Label Claims in Recent Tests --
White Plains, New York, January 29, 2014 — It's cold and flu season, which means many people are reaching for vitamin C, as it may modestly reduce cold symptoms (although it won't prevent a cold).
News Release
March 13, 2006
ConsumerLab.com reports on supplements for bone health containing calcium and vitamin D— Results posted for 32 supplements for adults and children; One found contaminated with lead
WESTCHESTER COUNTY, NEW YORK — MARCH 13, 2006 — ConsumerLab.com announced test results today from its new Product Review of Supplements for Bone Health covering 32 adult and children's products containing calcium and vitamin D. Sales of calcium supplements in the U.S.
CL Answer
What are the health effects of apigenin and is it safe?
Apigenin, a flavonoid compound, is promoted for sleep, depression, cancer, and other conditions. Find out if it works and if it's safe.
CL Answer
Do "lite" salts and salt substitutes containing potassium help lower blood pressure and reduce heart risks? Are they safe?
Find out if replacing regular salt with "lite" salt or salt substitutes, such as Morton Lite Salt, Morton Salt Substitute, NoSalt Original Sodium Free Salt Alternative, and MySalt, helps to reduce blood pressure, or decrease the risk of heart attack and stroke. Plus, learn about the safety and side effects associated with salt substitutes, drug interactions, and more.
CL Answer
Are red yeast rice supplements legally permitted to contain statins, like lovastatin, since these are drugs?
Learn more about red yeast rice supplements and the varying amounts of lovastatin they contain.
CL Answer
Do detox supplements work and are they safe?
Detox supplements are promoted for removing toxins such as heavy metals from the body, but does research support their use and are such supplements safe?
CL Answer
Can drinking coffee prevent gallstones? Can supplements help?
Information about the impact coffee has on gallstone disease. Plus, supplements that have been proposed to help with gallstone pain.
CL Answer
Can vitamins or other supplements cause a change in the ability to taste, or even a loss of taste?
Find out if supplements or vitamin deficiencies can cause changes in taste, loss of taste or smell. Information about vitamin D, zinc, vitamins A, B6, B12 and others. Plus medications and medical conditions that can alter taste and smell. ConsumerLab.com's answer explains.
CL Answer
Can supplements help me lose weight?
Learn more about weight loss supplements, including our lab test results and product comparisons.
Clinical Update
9/03/2021
Kidney Injury and COVID
Kidney injury appears to be more common in some people who have had COVID, according to a recent study.
Recalls & Warnings
October 05, 2019
Advocare to Pay $150 Million to Settle Charges of Operating a Pyramid Scheme
AdvoCare International, the marketing company that sells Spark energy drink, as well as other nutrition products and supplements, has agreed to settle FTC charges that it operated an illegal pyramid scheme.
Clinical Update
4/09/2019
Vitamin D & Kidney Failure
Although rare, excess intake of vitamin D can lead to kidney failure. This recently happened to a man taking a higher dose of vitamin D than he thought. Learn more in the Concerns and Cautions section of the Vitamin D Supplements Review. Also see our Top Picks for vitamin D supplements.
Clinical Update
11/11/2021
Multivitamins and Kidney Disease
People with chronic kidney disease are often advised to limit their intake of an ingredient that, they may not realize, is common in multivitamins. Learn more in the ConsumerTips section of the Multivitamin and Multimineral Supplements Review.
Clinical Update
12/03/2019
Vitamin C and Kidney Damage
High doses of vitamin C have been reported to cause a form of kidney damage, although this is more common in people with certain pre-existing medical conditions. For details, see the Concerns and Cautions section of the Vitamin C Supplements Review. Also see our Top Picks for vitamin C supplements.
Clinical Update
3/22/2024
Urolithin A to Protect Kidneys?
Does urolithin A prevent kidney damage? Find out in our article about Urolithin A.
Clinical Update
3/29/2024
Red Yeast Rice Linked to Deaths in Japan
Red yeast rice products in Japan have recently been recalled after being linked with kidney injury and four deaths. Get the details in our Red Yeast Rice Review, which includes our tests for citrinin (a potential kidney toxin in red yeast rice) and our Top Picks among products.
Clinical Update
4/09/2024
Creatine and Kidney Tests
Does taking creatine interfere with tests of kidney function that measure creatinine? Find out in the Concerns and Cautions section of our Creatine and BCAAs Review, which includes our Top Picks for creatine and other workout supplements.
Also see our answer to the question: Which vitamins and supplements should be stopped before getting blood work and laboratory tests?
Clinical Update
4/19/2024
NMN and Kidney Injury
New laboratory research suggests that long-term supplementation with NMN might cause kidney injury in older people. Learn more in the Concerns and Cautions section of our NAD Booster Supplements Review.
Clinical Update
12/15/2023
Cricket Protein and Kidneys
Cricket protein may be more environmentally friendly than animal sources of protein, but people with impaired kidney function may want to avoid consuming large amounts. Learn why in the Cautions and Concerns section of our Protein Supplements Review. Also see what we found when we tested cricket powders, and see our Top Picks for whey, soy, and other protein shakes and drinks.
Clinical Update
5/31/2024
Have Kidney Disease? Watch What’s In Your Water
People with chronic kidney disease are particularly susceptible to the toxic effects of heavy metals. Even low levels of lead in drinking water may be harmful, according to a recent study. See our Water Filter Pitchers Review for details. Also see our Top Picks among water filter pitchers.
Clinical Update
2/04/2017
Caution: Turmeric Drug Interaction
It was recently reported that a man consuming large daily amounts of turmeric experienced kidney toxicity, likely due to an interaction between turmeric and the drug he was taking. Get more details about this and other drug interactions with turmeric, curcumin, and piperine (a black pepper extract often added to curcumin supplements) in the "Concerns and Cautions" section of the Turmeric/Curcumin Supplements Review (which includes our tests of products) >>
Clinical Update
10/27/2020
Protein During Dialysis?
People on dialysis (for kidney failure) may lose protein, but do all dialysis patients benefit from protein supplementation? Find out what studies are showing in the What It Does section of our Protein Supplements Review. Also see our Top Picks for protein powders, shakes and drinks.
Clinical Update
8/26/2020
Vitamin K & Heart Health
Can taking vitamin K supplements improve vascular stiffness or lower blood pressure in people with kidney disease? Find out what a recent study showed in the What It Does section of our Vitamin K Supplements Review. Also see our Top Picks for vitamin K.
Clinical Update
12/04/2017
What NAC (N-Acetylcysteine)
NAC is both a supplement and a drug used to treat conditions ranging from flu and chronic bronchitis to compulsive behavior. A recent study evaluated its use in preventing kidney injury during angiography (imaging of blood vessels). Get the results and learn more in the "What It Does" section of the NAC (N-Acetylcysteine) Supplements Review >> Also see our top choices among NAC supplements.
Clinical Update
2/10/2023
Magnesium and Artery Calcification
Did magnesium supplementation slow coronary artery calcification in people with chronic kidney disease? See what a recent study found in the What It Does section of our Magnesium Supplements Review, which includes our Top Picks for magnesium.
Also see: Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?
Recalls & Warnings
October 18, 2017
FDA Warns Seller of Arthritis, Blood Pressure, Diabetes Supplements For Making Drug Claims
On August 15, 2017, the FDA issued a warning letter to Years to Your Health, Inc., following an inspection of the company's website which found a number of their products to be misbranded, as they contained drug claims.
Recalls & Warnings
May 30, 2017
Seller of Vitamin C, Calcium, Mushroom Supplements and More Warned for Manufacturing Violations
On May 12, 2017 the FDA issued a warning letter to VitaPurity Corporatio.
Recalls & Warnings
December 01, 2015
Weight Supplements Found to Contain Antidepressant and Other Prescription Drugs
On November 19, 2015, the FDA warned consumers not to buy or use the weight loss supplements listed below because they were found to contain prescription drugs. Each was identified during an examination of international mail shipments:
Recalls & Warnings
February 24, 2015
Seller of Antioxidant Water, Energy Drops Warned for Manufacturing Violations and Drug Claims
On February 18, 2015, the FDA issued a warning letter to Better Health Lab, Inc.
Recalls & Warnings
November 09, 2023
FDA Warns Biorica International for Cholesterol, Kidney & Cancer Claims
On August 4, 2023, the FDA issued a Warning Letter to Biorica International Corp. following review of the company’s websites and social media, which found statements about the company’s Plaquex Oral Supplements to be drug claims, which are not permitted for dietary supplements.
Recalls & Warnings
May 23, 2013
Seller of Sexual Enhancement, Cholesterol, Resveratrol Supplements and More Warned For Drug Claims
On May 2, 2013, the FDA issued a warning letter to Alternative Health Supplements, following a review of the company's website, which found statements made about several dietary supplements, including Regenerect, Alligin, Astaxanthin Advantage, HDL Cholesterol Management, Resveratrol, Coral Calcium ...
Recalls & Warnings
July 26, 2023
Five Leaf Pet Botanicals Warned by FDA for Drug Claims
On June 22, 2023, the FDA issued a warning letter to Five Leaf Pet Botanicals, Inc.
News Release
August 07, 2000
ConsumerLab.com finds that not all creatine supplements meet label claims; Popular sports supplement test results released online
WHITE PLAINS, NY, August 7, 2000 — ConsumerLab.com today released results of its 8th Product Review, focusing on creatine monohydrate dietary supplements.
Recalls & Warnings
November 16, 2023
Toxic Levels of Lead Found in Cinnamon Applesauce
WanaBana, Schnucks, and Weis apple cinnamon fruit puree pouches have been recalled after being linked, as of December 5, 2023, to 64 reports of illness, including four children with potential lead toxicity.
Recalls & Warnings
April 27, 2023
Seller of Magtein, Veggie Caps, & More Warned for Drug Claims, Manufacturing Violations
On March 8, 2023, the FDA issued a warning letter to Spartan Enterprises Inc., dba Watershed Wellness Center, after a review of the company’s website found statements about its Dr. Bob’s Naturals Spirulina, Dr. Bob’s Naturals Magtein, Dr.
Recalls & Warnings
November 05, 2021
Herb Recalled Due to Risk of Lead, Cadmium Contamination
On November 2, 2021, Murray Int'l Trading issued a recall of Herbal Doctor brand Angelicae Sinensis due to potential risk it may contain elevated levels of lead and cadmium.
Recalls & Warnings
December 23, 2017
Seller of Meal Replacement, Protein Drinks, Cranberry and More Warned for Manufacturing Violations
On July 6, 2017, the FDA issued a warning letter to Professional Botanicals, Inc.
Recalls & Warnings
November 21, 2017
Health Canada Calls for Stronger Warnings of Liver Risk on Green Tea Extract Products
On November 15, 2017, Health Canada (the Canadian equivalent of the FDA) recommended stronger warning statements about the risk of liver toxicity on labels of supplements containing green tea extract sold in Canada.
Recalls & Warnings
July 31, 2018
FDA Warns Seller of Joint Health and Cholesterol Supplements
On July 13, 2018, the FDA issued a warning letter to GC Natural, following a facility inspection which found a number of the company's products, including Red Pyrola Plus + Advanced Joint Formula Capsules, CSDP GOLD Capsules, Rejeune Optimal Kidney & Liver Support Extract balls, C.
Recalls & Warnings
March 16, 2018
FTC Sends Refund Checks to Consumers of Unproven Weight-Loss Products
On March 15, 2018, the FTC announced it is mailing 18,301 checks totaling more than $437,000 to consumers who purchased weight-loss products from Colby Fox, Christopher Reinhold, and their companies, Tachht, Inc. and Teqqi, LLC.
Recalls & Warnings
January 11, 2012
Herbal Extract Company Warned by FDA of Making Drug Claims
On January 3, 2012, the U.S. FDA sent a Warning Letter to Herbal Extract Plus, LLC regarding legal violations for claiming its herbal products can cure or prevent diseases.
Recalls & Warnings
October 13, 2018
Pharmaceutical Drugs Found In Dietary Supplements Pose Danger to Consumers
Almost 800 dietary supplements sold between 2007 and 2016 contained unapproved pharmaceutical ingredients, according to a study published today in the Journal of the American Medical Association (JAMA).
Recalls & Warnings
December 16, 2013
Weight Loss Capsules Recalled Due Allergen Risk
On December 13, 2013, Stone Independent Research, Inc. issued recall of one lot of Zanocap Scientific Weight Loss 500 mg capsules because they contain undeclared whey protein, which is derived from milk.
Recalls & Warnings
January 18, 2013
FTC Upholds Ruling, POM Wonderful Health Claims Were Deceptive
On January 16, 2013, the Federal Trade Commission (FTC) announced it will uphold a judge’s ruling that makers of POM Wonderful 100% Pomegranate Juice and POMx supplements made deceptive and unsubstantiated claims that the products could treat, prevent, or reduce the risk of heart disease, prostate ...
Recalls & Warnings
November 28, 2006
FTC Targets Seller of Pills Promoted for Height, Weight, and Bone Improvement
On November 28, 2006, the Federal Trade Commission (FTC) announced that a Florida business and its owner, who marketed purported height-enhancing pills for kids and young adults, will pay $375,000 to settle charges that their advertising claims were deceptive.
Recalls & Warnings
July 12, 2013
Herbal Supplement Company Warned For Drug Claims, Manufacturing Violations
On June 18, 2013, the FDA issued a warning letter to Herbs of Light, Inc.
Recalls & Warnings
January 24, 2013
Excessive Lead and Mercury Found In Chinese Herbal Supplements
On January 23, 2013, Health Canada warned consumers that certain batches of the Chinese dietary supplements [W.S.
Recalls & Warnings
September 20, 2010
Many Supplements Recalled for Hormone-Affecting Compounds
On September 20, 2010, the U.S. FDA posted a Safety Notice regarding the recalls of several products marketed as dietary supplements that contain aromatase inhibitors, commonly known as "ATD.
Recalls & Warnings
September 15, 2010
Recall of Testosterone-Boosting Supplement
On September 14, 2010, the FDA posted a notice that KiloSports is recalling Clomed (60 count bottles), a supplement with claims to "release gonadatropin," "elevate testosterone" and "promote spermatogenesis."
Recalls & Warnings
September 18, 2015
High Levels of Mercury and Lead Found in Ayurvedic Herbal Supplements
On September 17, 2015, the FDA announced that Shree Baidyanath Ayurved Bhawan Ayurvedic dietary supplements were found to contain high levels of lead and/or mercury, which can cause serious health problems.
Recalls & Warnings
March 28, 2017
Yogurt Peanut Crunch Bars Recalled Due to E. Coli Risk
On March 23, 2017, Pro Sports Club of Bellevue, WA issued a recall of 36,957 20/20 Life Styles Yogurt Peanut Crunch bars because they have the potential to be contaminated with Escherichia coli O157:H7.
Recalls & Warnings
December 29, 2015
Maker of Vitamin K, Vitamin A & More Warned for Manufacturing Violations, Drug Claims
On December 10 2015, the FDA issued a warning letter to Dherbs Health Emporium, Inc.
Recalls & Warnings
January 02, 2012
FDA Warns ION Labs of Manufacturing Violations Affecting Multiple Dietary Supplements
On December 5, 2011 the U.S.
Recalls & Warnings
April 11, 2008
Twelve Dietary Herbal Supplements Recalled -- Possible Health Risk Associated with Ephedra, Aristolochic Acid and Human Placenta
On April 10, 2008, the FDA posted a recall notice issued the same day from Herbal Science International, Inc. (AKA Jen-On Herbal Science International, Inc.).
Recalls & Warnings
July 29, 2009
FDA Warns Against Body Building Supplements with Steroid-like Compounds
On July 28, 2009, the U.S. FDA notified the public about new safety information concerning products marketed for body building and increasing muscle mass.
Recalls & Warnings
September 09, 2011
Possible Concern with Fenugreek Based on Contamination in Europe
Products made with fenugreek, including pills containing fenugreek seed, have been pulled from shelves in Germany due to conern over potential contamination with E. coli bacteria. There is no such action in the U.S., but ConsumerLab.
Recalls & Warnings
July 12, 2017
More Bodybuilding Supplements Recalled
On July 11, 2017, Andropharm recalled two bodybuilding supplements, Sten Z and M1 Alpha, because these products contain derivatives of anabolic steroids.
Recalls & Warnings
June 20, 2017
Beware of Bodybuilding Supplements, FDA Warns
On June 20, 2017, the FDA warned consumers to beware of bodybuilding products because a number of these products have been found to contain steroids or steroid-like substances. Such products could cause serious and even life-threatening health risks, including:
Recalls & Warnings
March 19, 2014
Maker of Herbal Capsules and Extracts Warned for Manufacturing Violations
On September 19, 2013, the FDA issued a warning letter to Herbalist and Alchemist, Inc.
Recalls & Warnings
June 21, 2010
FDA Warns Parents to Be Careful Giving Vitamin D Drops to Infants
On June 15, 2010, the U.S. FDA (Food and Drug Administration) alerted parents and caregivers that some liquid Vitamin D supplement products are sold with droppers that could allow excessive dosing of Vitamin D to infants.
