Product Reviews and Information for Irritable Bowel Syndrome
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Product Review
Probiotic Supplements Review (Including Pet Probiotics)
Probiotics: See What They Really Contain and Our Top Picks
CL Answer
I have IBS and don't want to take medication if I can help it. I've heard that peppermint works for IBS, but is there good research to support this?
Information about using peppermint oil for irritable bowel syndrome (IBS), including clinical evidence, dosage, safety and more.
CL Answer
Can N-acetyl-glucosamine (NAG) really help improve symptoms of bowel disease such as Crohn's disease or ulcerative colitis, or irritable bowel syndrome (IBS)?
Find out if N-acetyl-glucosamine (NAG) can help improve symptoms of bowel disease such as Crohn's disease or ulcerative colitis, or irritable bowel syndrome (IBS).
Product Review
Prebiotic Supplements Review
You Can't Tell How Much Fiber Is Really In Most Prebiotics Without Testing
CL Answer
Butyrate Supplements for Gut Health: Does butyric acid really work and is it safe?
Can butyrate supplements improve gut health or help reduce symptoms of irritable bowel syndrome (IBS) or Crohn's disease? Find out what the clinical evidence shows, learn about the different forms of butyrate, including sodium butyrate, calcium-magnesium butyrate, and tributyrate, and get details about products such as BodyBio Sodium Butyrate and Healus Complete Biotic Tributyrin, dosage, safety and cost.
Clinical Update
5/07/2024
Probiotic for IBS
Can a probiotic (live or heat-treated) reduce symptoms of diarrhea-predominant irritable bowel syndrome? Find out what a recent study showed in the IBS section of our Probiotic Supplements Review. Also see our Top Picks among probiotics.
Also see: Do any supplements help for irritable bowel syndrome (IBS)?
Clinical Update
7/18/2023
Probiotic for IBS?
Did taking a probiotic further reduce symptoms of irritable bowel syndrome in people on a low-FODMAP diet? Find out in the IBS section of our Probiotics Supplements Review.
Also see: Do any supplements help for irritable bowel syndrome (IBS)?
Clinical Update
6/30/2013
Probiotic for Irritable Bowel Syndrome?
A popular probiotic given in a yogurt appeared to reduce symptoms in people with irritable bowel syndrome. However, people taking a yogurt without the probiotic did just as well, if not better, over time, raising doubt about the value of the probiotic. For more details, as well as test results and comparisons for 29 probiotic supplements, see the updated Probiotic Supplements Review >>
CL Answer
Has the probiotic VSL#3 been changed or discontinued? Is Visbiome a good alternative?
Find out if the probiotic formula VSL#3 has been changed and how it compares with Visbiome. ConsumerLab.com's answer explains.
CL Answer
What are the benefits of Daily Synbiotic by Seed Health? Does it do what it claims, and is it better than other probiotics and prebiotics?
Review of Daily Synbiotic by Seed, including information about the prebiotic and probiotic strains in the supplement, and whether there is evidence of benefit for the synbiotic.
CL Answer
Can a probiotic help men with prostatitis?
Learn more about prostatitis, the effects of probiotics on prostatitis, and other natural treatments.
CL Answer
Do probiotics help with lactose intolerance?
Find out if probiotics can help with lactose intolerance. ConsumerLab's answer explains, including some foods that may cause fewer symptoms in the lactose intolerant.
CL Answer
Which supplements can cause diarrhea?
Can supplements like magnesium cause diarrhea? Find out which supplements may cause diarrhea, such as vitamin B12, curcumin, magnesium, vitamin C and fish oil.
Product Review
Digestive Enzyme Supplements Review
Big Differences in Strength Found Among Digestive Enzyme Supplements. CL Tests Reveal Which Are Best.
CL Answer
Have you heard of the probiotic, Keybiotics? Does it do what it claims, and is it worth the money they charge?
Whole Body Research Keybiotics probiotic information, including its ingredients and possible cheaper alternatives.
CL Answer
How do I choose the best probiotic supplement? There are so many different strains of bacteria!
Information on how to choose the best probiotic supplement based on safety and our lab test on probiotic bacteria content.
CL Answer
Which supplements or OTC medications help reduce flatulence (gas), and are there any that make it worse?
Find out which supplements may help reduce flatulence (gas), and learn which supplements or foods may worsen symptoms of flatulence.
Clinical Update
8/03/2021
Vitamin D for IBS?
Can vitamin D supplementation reduce the severity of symptoms in people with irritable bowel syndrome (IBS)? See what a new study found in the What It Does section of our Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Clinical Update
8/07/2021
Peppermint Oil for IBS?
Can peppermint oil supplements improve symptoms in people with irritable bowel syndrome (IBS)? See what a new study found in our updated article about Peppermint Oil and IBS.
Clinical Update
10/02/2021
Human Milk Oligosaccharides (HMOs) for IBS?
Are symptoms of IBS improved with use of human milk oligosaccharides (HMOs)? Find out what research suggests in our answer to the question: Do any supplements help for irritable bowel syndrome (IBS)?
Clinical Update
1/02/2011
Probiotics and Irritable Bowel Syndrome (IBS)
A recent study of children with IBS found that eight weeks of treatment with a probiotic greatly reduced the frequency and severity of abdominal pain. See the Probiotic Supplements Review for the type and dose of probiotic used and more >>
Clinical Update
12/17/2014
Probiotic Reduces GI Pain in IBS
A yeast-based probiotic was recently shown to significantly reduce abdominal pain and discomfort among people with irritable bowel syndrome (IBS). The most notable effect occurred after 4 weeks of use. Other studies, typically using bacterial probiotics, have also shown some benefit in IBS. For details, see the Probiotic Supplements Review >>
Clinical Update
5/25/2014
Probiotic for IBS Symptoms
A recent study found that a multi-strain probiotic reduced certain symptoms of irritable bowel syndrome (IBS). Get the details, as well as our tests of probiotic products, in the updated Probiotic Supplements Review >>
Clinical Update
3/02/2016
Probiotic Helps with IBS
A probiotic was found to improve many symptoms of irritable bowel syndrome in a recent study. Studies with other probiotics have also shown benefits, but be aware that the choice of probiotic seems to depend on the type of IBS. Get the details, as well as our quality ratings, in the Probiotic Supplements Review >>
Clinical Update
10/06/2015
Probiotic Improves IBS Symptoms
A probiotic significantly improved symptoms in men and women with a particular type of irritable bowel syndrome (IBS), according to a recent study. Get the details, including dosage, and our tests of popular products, in the Probiotic Supplements Review >>
Clinical Update
6/12/2018
Probiotic for IBS?
Studies have shown that certain probiotics help relieve symptoms of irritable bowel syndrome (IBS), although this can depend on the type of IBS. The most recent study focused on people with diarrhea-predominant IBS. Get the results in the What It Does section of the Probiotic Supplements Review. Also see our Top Picks among probiotics.
Clinical Update
9/04/2018
Glutamine for IBS?
Glutamine, an amino acid, plays a role in maintaining the digestive tract. Can taking it as a supplement help people with irritable bowel syndrome (IBS)? Find out what a recent study showed in the Glutamine section of the Muscle Enhancers Review.
Clinical Update
5/26/2017
Probiotic Reduces Depression in IBS
A probiotic significantly decreased depression in men and women with irritable bowel syndrome (IBS), according to a recent study. For details, see the "What It Does" section of the Probiotic Supplements Review >>
Clinical Update
6/03/2022
Digestive Enzymes for IBS?
Does taking digestive enzymes reduce symptoms of irritable bowel syndrome (IBS)? Find out in our updated Digestive Enzyme Supplements Review.
Clinical Update
2/02/2024
Probiotic for IBS?
Did a multi-strain probiotic improve symptoms of irritable bowel syndrome in a recent study? Find out in the Symptoms of IBS section of our Probiotics Supplements Review. Also find out which product containing this specific multi-strain probiotic was tested and Approved by ConsumerLab.
CL Answer
Do any supplements help for ulcerative colitis?
Find out what supplements & vitamins can help with ulcerative colitis, such as VSL#3, curcumin, aloe or boswellia.
Product Review
Melatonin Supplements Review
Trouble Sleeping? See CL's Tests of Melatonin Supplements and Top Picks.
CL Answer
Do any supplements help for irritable bowel syndrome (IBS)?
IBS supplements may help reduce irritable bowel symptoms such as pain, diarrhea and constipation. Supplements include probiotics, melatonin, and flaxseed.
Recalls & Warnings
March 01, 2023
Seller of Dr. Miller’s Herbal “Detox” Teas Warned by FDA for Drug Claims
On February 3, 2023, the FDA issued a warning letter to Jackson Health & Wellness Clinic after inspection of the company’s website found statements about the company’s Dr. Miller’s Holy Tea, Dr. Miller’s Super Holy Tea, Dr. Miller’s Ultimate Tea, Dr.
Product Review
Lactose Intolerance Products Review (Lactase Enzyme Supplements and Lactose-Free Milks)
Choose the Best Lactase Enzyme Supplement and Lactose-Free Milk. Find a CL Approved Lactose Intolerance Product.
Product Review
L-Tryptophan and 5-Hydroxytryptophan (5-HTP) Supplements Review
Choose the Best L-Tryptophan and 5-HTP Supplements. CL Tests Identify High Quality L-Tryptophan and 5-HTP (5-Hydroxy-L-Tryptophan) at the Best Value.
CL Answer
Which supplements and foods help relieve constipation and which can cause constipation?
Find out which supplements can cause constipation, including iron, calcium, protein powders and drinks and others. ConsumerLab.com's answer explains.
Product Review
Aloe Juices, Gels, and Supplements Review
How Much Aloe is Really in Aloe Products? Find Out and See Our Top Picks.
Product Review
Psyllium Fiber Supplements Review
Find the Best Psyllium Fiber Supplement and Avoid Lead.
Product Review
Lavender and Tea Tree Essential Oils Review
Oils Tested for Authenticity and Purity
Product Review
Iron Supplements Review (Iron Pills, Liquids and Chews)
See Which Iron Supplements Are CL's Top Picks for Different Needs
Product Review
Berberine and Goldenseal Supplements Review
Tests Reveal the Best and Worst Berberine and Goldenseal Products
Product Review
Muscle & Workout Supplements Review (Creatine and Branched-chain Amino Acids)
Do Creatine and BCAAs Really Improve Strength and Recovery?
News Release
November 10, 2022
Best Probiotic Supplements Identified by ConsumerLab Tests
White Plains, New York, November 10, 2022 — Probiotic supplements can be helpful in preventing or treating constipation, diarrhea, flatulence, vaginal infections, and other conditions, but with so many different products on the market, choosing the best one is no easy task.
CL Answer
What are the health benefits of chlorophyll and chlorophyllin, and are they safe?
Chlorophyll supplements are promoted for reducing body odor, preventing cancer, removing toxins from the body, improving digestive conditions and other uses, but do they work and are they safe? Find out and learn if such supplements actually contain chlorophyll.
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.
News Release
October 28, 2022
Labels on Prebiotic Supplements Are Often Unreliable, Tests Show
White Plains, New York, October 28, 2022 — Prebiotic supplements provide fiber that feed beneficial bacteria in the gut. However, recent ConsumerLab tests show that consumers often can’t rely on labels to know how much prebiotic fiber is really in products.
CL Answer
What are the health benefits of manuka honey, and is it safe?
Manuka honey health benefits, how it differs from common, store-bought honey, safety, evidence for using manuka honey for wounds, sore throat and cough, constipation and more.
CL Answer
Which supplements can help with indigestion and/or heartburn?
Information on supplements for heartburn that can help relieve gastrointestinal symptoms - heartburn, indigestion and acid reflux.
CL Answer
What are the health benefits of bovine colostrum and is it safe?
Bovine colostrum is promoted for boosting immunity, preventing and treating diarrhea, and improving gut health, but does it really work? See the clinical evidence for bovine colostrum, including doses that have been used, as well as safety concerns, cost considerations, and the difference between regular bovine colostrum and hyperimmune bovine colostrum.
News Release
April 14, 2020
ConsumerLab Tests Reveal Best Probiotic Supplements and Those With Quality Issues
White Plains, New York, April 14, 2020 — Probiotic supplements may be helpful for conditions including antibiotic-associated diarrhea, irritable bowel syndrome, and respiratory infections.
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
Which supplements, foods or diet and lifestyle changes help relieve acid reflux (heartburn), and which worsen it?
Find out which supplements and foods can help relieve acid reflux, and which can make it worse.
CL Answer
Is it better to take fish oil, flaxseed oil -- or both?
Fish oil and flaxseed oil -- how they are different, what they are used for, if and how they can help with arthritis, depression, lowering cholesterol & more.
News Release
July 31, 2018
Best L-Tryptophan and 5-HTP Supplements Identified by ConsumerLab -- ConsumerLab Tests Strength and Purity of Supplements for Sleep and Mood
White Plains, New York, July 31, 2018 — L-tryptophan supplements are often promoted to improve sleep and 5-HTP supplements to help with depression.
News Release
May 02, 2018
Best Probiotic Supplements and Kombuchas? -- ConsumerLab Tests 41 Popular Products, Reveals Problems and Top Picks
White Plains, New York, May 2, 2018 — With so many different probiotic supplements on the market, each providing different amounts and strains of beneficial bacteria or yeast, choosing the right one can be an overwhelming task.
CL Answer
Which supplements and foods can help treat constipation?
Find out which supplements and foods can help for constipation, including fiber, flaxseed, probiotics, magnesium and fruit.
CL Answer
Can coconut water help with muscle cramps or restless legs syndrome?
Can coconut water help muscle cramps or restless legs syndrome (RLS) as a rich source of potassium? ConsumerLab.com's answer explains and shows tests of popular coconut waters.
CL Answer
Hemp Seeds: Health Benefits, Safety, and What To Consider When Picking a Product
Hemp seeds are promoted for heart health, diabetes, boosting testosterone, and other conditions, but do they work? Find out and learn about potential safety concerns.
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.
CL Answer
What is BPC-157, what is it used for and is it safe?
Find out about BPC-157, including what it's promoted for and if it is safe.
CL Answer
Do any supplements help reduce menstrual pain or symptoms of premenstrual syndrome (PMS)?
Find out which supplements help reduce premenstrual syndrome (PMS) symptoms, such as mood swings, pain, bloating, irritability and food cravings.
CL Answer
Which supplements can help treat anemia? Do any supplements cause a low red blood cell count?
Find out which vitamin and nutrient supplements can help prevent and treat anemia in people who are nutrient deficient and learn which supplements may cause low blood cell counts, especially when used in excess.
News Release
August 31, 2012
ConsumerLab.com tests selenium supplements -- Finds one with less than 25% of listed amount
White Plains, New York, August 31, 2012 — ConsumerLab.com announced results today of its Product Review of Selenium Supplements. Among the supplements selected by ConsumerLab.com for testing, one was found to contain only 23.
CL Answer
What is GABA (gamma-aminobutyric acid)? Is it beneficial for stress, anxiety, insomnia or other conditions, and is it safe?
Find out about GABA (gamma-aminobutyric acid), including if it's beneficial for insomnia, epilepsy, stress and anxiety, high blood pressure and building muscle, and learn if taking GABA supplements is safe.
News Release
February 09, 2012
Probiotics grow in popularity but don't always deliver on promises says ConsumerLab.com -- New report provides guidance to consumers
White Plains, New York, February 9, 2012 — Probiotic supplements and foods containing "friendly" bacteria or yeast have become popular options for people hoping to improve bowel function or boost immunity. But many customers are confused by the vast array of choices.
News Release
November 16, 2009
ConsumerLab.com finds many probiotics don't deliver listed ingredients
White Plains, New York November 16, 2009 — Many probiotic supplements do not contain the number of viable organisms listed on their labels according to a new report from ConsumerLab.com.
Recalls & Warnings
December 17, 2020
FTC Crackdown on Six Deceptive CBD Products
On December 17, 2020, the FTC announced that it is taking action against six companies for selling CBD products with unsupported and deceptive health claims that they can treat a variety of conditions, including cancer, heart disease, hypertension, Alzheimer's disease, and others.
CL Answer
Can zuPOO and its primary ingredient, cascara sagrada, cleanse the gut, improve digestion and help with weight management?
zuPOO is marketed for gut support and as a colon cleanser for weight management. Find out if research supports these claims and if ingredients in zuPOO are safe.
CL Answer
Are There Supplements That Help Treat POTS (Postural Orthostatic Tachycardia Syndrome)?
Find out which supplements and lifestyle changes may be helpful for people with Postural Orthostatic Tachycardia Syndrome (POTS).
CL Answer
Do any supplements help with restless legs syndrome?
Find out whether supplements or vitamins like iron, magnesium, vitamin E and others can help for restless leg syndrome (RLS). ConsumerLab.com's answer explains.
CL Answer
I developed a rash soon after starting a probiotic. Is it possible to be allergic to probiotics?
Find out if probiotics can cause allergic reactions, including skin rashes, and why.
CL Answer
I've heard fish oil may be helpful for dry eye. Is this true? How much should I take?
Can fish oil help treat dry eyes? Find out more along with how much to take.
CL Answer
Do any supplements or foods benefit people with Crohn's disease? Are there any supplements that should be avoided?
Find out the most common vitamin and mineral deficiencies in people with Crohn's disease, including iron, B6, B12, vitamin D, zinc and others, plus evidence for N-acetyl-glucosamine (NAG), fish oil, and curcumin.
News Release
August 04, 2009
Most vitamin E supplements pass testing, but what seems natural may be synthetic according to ConsumerLab.com -- New review of vitamin E supplements, oils, and creams released today
White Plains, New York — November 16, 2009 — Many probiotic supplements do not contain the number of viable organisms listed on their labels according to a new report from ConsumerLab.com.
CL Answer
Do magnesium supplements, like Magtein, help memory or protect against Alzheimer's disease?
Magtein, and other magnesium supplements, may help memory and protect against Alzheimer's disease.
CL Answer
I take fluoxetine (Prozac), a SSRI drug to treat depression. Are there supplements I should avoid, or be taking, due to this drug?
Learn about Prozac (fluoxetine) drug interactions along with other supplements and SSRIs.
CL Answer
What are the health benefits of zinc carnosine, also called polaprezinc, and is it safe?
Find out if zinc carnosine is beneficial for any GI conditions, including stomach ulcers, Helicobacter pylori infection, taste disturbances, aspirin-induced small-bowel injury and oral mucositis, and learn if it is safe.
CL Answer
What are the signs of iron deficiency anemia?
Find out the signs and symptoms of iron deficiency anemia, such as fatigue, shortness of breath, rapid heartbeat and others.
Recalls & Warnings
April 23, 2013
Seller of Digestion, Thyroid and Vitamin D Supplements Warned For Drug Claims
On November 5, 2012, the FDA issued a warning letter to The Women's Health Institute at Texas following a review of the company's various websites which found statements made about Digest + SEB, Iodine Plus 2, and D5000 Vitamin D dietary supplements to be drug claims.
Clinical Update
2/03/2021
Thiamin Deficiency from Bowel Disease
People with inflammatory bowel disease (such as Crohn’s or colitis) can develop thiamin (vitamin B-1) deficiency, which can lead to life-threatening brain injury, as noted in a recent review of 31 cases. Learn more about this and other causes of thiamin deficiency in the Thiamin section of our B Vitamin Supplements Review.
Clinical Update
9/22/2015
Probiotic Increases Bowel Movement Frequency
A certain probiotic increased the number of weekly bowel movements in healthy men and women who reported a low frequency. Get the details, including brand and dosage, plus our tests of popular products in the Probiotic Supplements Review >>
Clinical Update
3/25/2022
Psyllium for Uncontrolled Bowel Movements
Psyllium is commonly used as a laxative, but did you know it can also help people with uncontrolled bowel movements (fecal incontinence), as noted in recent, expert guidelines? Get the details in the What It Does section of our Psyllium Fiber Supplements Review. Also see our Top Picks among psyllium supplements.
Clinical Update
10/28/2022
Zinc Deficiency & Bowel Disease
A recent study showed zinc deficiency to be extremely common among people with Crohn’s disease and ulcerative colitis (the most common forms of inflammatory bowel disease or IBD). Find out more and if zinc supplements may help in the Zinc deficiency section of our Zinc Supplements Review.
Learn more about supplements for Crohn's disease and ulcerative colitis.
Clinical Update
5/05/2023
Restless Leg Syndrome: GABA vs Gabapentin
One of these can help with restless leg syndrome, while the other doesn’t. Learn the difference in our GABA Supplements Review, which includes our Top Picks for GABA.
Also see our article about supplements for restless legs syndrome.
Clinical Update
3/02/2016
Ginseng for Metabolic Syndrome?
A study in men with metabolic syndrome found no benefit on blood sugar levels from taking ginseng, but a small increase in testosterone. Get the details about this and other uses for ginseng, as well as our quality ratings in the Ginseng Supplements Review >>
Clinical Update
8/16/2016
Inulin for Constipation
A small study among men and women with constipation found that inulin, a type of prebiotic, was able to modestly increase the frequency of bowel movements in men and women with constipation. For details, evidence for other uses of prebiotics and our tests of products, see the Probiotics Supplements Review >>
Clinical Update
6/09/2018
Magnesium & Metabolic Syndrome
A study shows that magnesium can significantly help some people suffering from metabolic syndrome (i.e., high blood sugar, high blood pressure, and related symptoms). Get the details in the What It Does section of the Magnesium Supplements Review. Also see our Top Picks among magnesium supplements.
Clinical Update
7/14/2020
Precaution When Taking Iron
Supplementing with iron can cause constipation and even bowel obstruction. Find how to reduce these risks when taking iron in the ConsumerTips section of the Iron Supplements Review. Also see our Top Picks for iron.
Clinical Update
7/13/2018
Melatonin and Restless Legs Syndrome
Taking a melatonin supplement can help some people fall asleep, but a study suggests that it may be a problem for people with restless legs syndrome. Get the details, and learn about potential side effects of melatonin in the Concerns and Cautions section of the Melatonin Supplements Review.
Clinical Update
10/24/2015
Probiotic Helps with Constipation
A recent study found that taking a particular probiotic twice a day after meals significantly increased the number of bowel movements in people with chronic constipation. For details about the probiotic and dose, see the Probiotic Supplements Review >>
Clinical Update
2/21/2015
Probiotic Prevents Bloating from Proton Pump Inhibitor (PPI)
Acid-blocking PPI drugs, such as Prilosec (omeprazole) and Protonix (pantoprazole) may cause people to experience bloating and other unpleasant bowel symptoms, possibly due to overgrowth of bacteria in the intestine. A recent study suggests that taking a probiotic may help prevent these symptoms from occurring. For more details, as well as our reviews of popular probiotics, see the Probiotic Supplements Review >>
Clinical Update
8/12/2024
Vitamin D for Restless Legs?
Did taking vitamin D reduce the severity of restless legs syndrome in women? See what a recent study found in the Restless legs syndrome (RLS) section of our Vitamin D Supplements Review, which includes our Top Picks for vitamin D.
Clinical Update
8/19/2024
Iron for Restless Legs Syndrome?
Is it true that taking iron can improve symptoms of restless legs syndrome? Find out in our Iron Supplements Review, which includes our Top Picks for iron.
Clinical Update
9/30/2024
Valerian for Restless Legs?
Does taking valerian root reduce the severity of restless legs syndrome? See what clinical evidence shows in our Valerian Supplements Review, which includes our Top Picks among valerian supplements.
Also see: Do any supplements help with restless legs syndrome?
Clinical Update
10/02/2024
Probiotic for Constipation?
Did taking the probiotic Bifidobacterium lactis HN019 improve symptoms in people with mild constipation? Find out what a recent study showed in the Constipation and infrequent bowel movements without IBS section of our Probiotic Supplements Review, which includes our Top Picks among probiotic supplements..
Clinical Update
2/13/2024
Crohn’s Disease, Colitis & Key Nutrients
Experts are advising that people with inflammatory bowel disease, including Crohn’s disease and ulcerative colitis, be monitored for deficiencies in vitamin D and iron.
Also see our Top Picks among vitamin D and iron supplements.
Clinical Update
5/10/2024
Magnesium, Sleep Apnea & Restless Legs
Does taking magnesium help with sleep apnea? Does it help with restless legs syndrome? These questions are addressed in our Magnesium Supplements Review, which includes our Top Picks among magnesium supplements.
Also see: Do any supplements help with restless legs syndrome?
Clinical Update
5/20/2022
Inulin for Constipation?
Can inulin increase bowel movements in people with constipation? Find out in our updated CL Answer about supplements for constipation.
Clinical Update
11/08/2022
Synbiotic for Constipation?
Can supplementing with a synbiotic (probiotic + prebiotic) increase bowel movements in children with constipation? Find out what research showed in our CL Answer about this brand of synbiotics.
Clinical Update
12/07/2021
Can Warm Coffee Trigger Burning Mouth Syndrome?
A member asked if anyone else had experienced "burning mouth syndrome" after drinking warm coffee. Find out if drinking coffee can trigger symptoms of this known condition in the Safety section of our updated article about Coffee and Heart Health.
Clinical Update
12/10/2021
Magnesium for Metabolic Syndrome?
Can magnesium supplementation lower blood sugar and blood pressure in people with metabolic syndrome? Learn what a new study found in the What It Does section of the Magnesium Supplements Review. Also see our Top Picks among magnesium supplements.
Clinical Update
1/11/2022
Ginkgo and Cistanche for Chronic Fatigue Syndrome?
Does supplementing with ginkgo and cistanche extracts help reduce symptoms of chronic fatigue syndrome? See what a recent study showed in our updated answer to the question: Which supplements help to improve energy and decrease fatigue?
Clinical Update
8/18/2023
Inositol for PCOS?
See if a panel of experts recently recommended inositol for PCOS (polycystic ovarian syndrome) in our article about Inositol for PCOS.
Clinical Update
8/14/2021
J&J Vaccine Blood Clot, Guillain-Barre Risk
How common are blood clots and low platelet counts or Guillain-Barre syndrome after the J&J vaccine?
Clinical Update
5/14/2024
Melatonin and Restless Legs
Melatonin may help some people fall asleep faster, but might it worsen symptoms in people with restless legs syndrome (RLS), which makes sleeping more difficult? Find out in the Concerns and Cautions section of our Melatonin Supplements Review, which includes information about other potential side effects, as well as interactions, with melatonin.
Clinical Update
9/26/2023
Creatine for Post-COVID Fatigue?
Does supplementing with creatine reduce fatigue or other symptoms in people with post-COVID fatigue syndrome? Find out what a recent study showed in the Creatine - What It Does section of our Muscle & Workout Supplements Review. Also see our Top Picks for creatine.
Also see: How Should You Take Care of Yourself After You’ve Had COVID-19?
Clinical Update
7/11/2023
Arthritis Supplement May Have Caused Cushing Syndrome
We’ve added more information about the risks of a supplement for joint pain sold by Walmart. Get the details.
Clinical Update
6/17/2022
Supplements for POTS?
People with postural orthostatic tachycardia syndrome (POTS) experience a fast heart rate, dizziness, and other symptoms when standing. Can any supplements or lifestyle changes help? Find out in our answer to the question: Are there supplements that help treat POTS?
Clinical Update
10/18/2022
Fenugreek for PCOS?
Can supplementing with fenugreek extract improve symptoms of polycystic ovarian syndrome (PCOS)? Find out what a recent study suggests in our updated article about Supplements and PCOS.
Clinical Update
1/23/2016
Vitamin D Reduces PMS Symptoms
A recent study found that taking vitamin D significantly improved symptoms of premenstrual syndrome (PMS) in young women who were deficient in vitamin D. Get the details in the Vitamin D Supplements Review >>
Clinical Update
8/04/2013
5-HTP Concern
Three cases of eosinophilia-myalgia syndrome (EMS) have been reported among people taking 5-HTP, a compound related to L-tryptophan. EMS is a debilitating immune condition which has occurred in people taking L-tryptophan, but there were no previous reports of it being caused by 5-HTP. Get the details in the the updated review article on L-Tryptophan and 5-HTP >>
Clinical Update
3/31/2013
More Iron, Less PMS?
A new study showed that women getting more iron had a significantly lower risk of suffering PMS (premenstrual syndrome) -- but not just any type of iron. Get the details, as well as our ratings of iron supplements, in the updated Iron Supplements Review »
Clinical Update
1/20/2013
More Probiotic Concerns
According to a published case report, two women recently developed a severely debilitating condition ("eosinophilic syndrome") two to four weeks after taking what appears to be the same "new" probiotic supplement. It's not yet known if these are isolated cases or are there more to come. For more information, see the recent update to the Probiotic Supplements Review >>
Clinical Update
5/24/2017
POTS and Thiamin
A small study among people who suffer from POTS (postural tachycardia syndrome) suggested that supplementing with thiamin (vitamin B-1) may help some. For details, see the Thiamin (B-1) section of the B Vitamin Supplements Review >>
Clinical Update
8/02/2017
Iron for Restless Legs
Iron supplementation may help to reduce the severity of restless legs syndrome (RLS) symptoms in people who have deficient or low levels of iron, according to guidelines from the American Academy of Neurology. For details, including dosage, see the "What It Does" section of the Iron Supplements Review, which also includes our tests and quality comparisons of products.
Clinical Update
2/10/2017
High-Dose Resveratrol Increases "Bad" Cholesterol
A study of middle-aged men with metabolic syndrome found that high doses of resveratrol increased levels of "bad" LDL cholesterol. Get the details in the "What It Does" section of the Resveratrol Supplements Review (which includes our tests of products) >>
Clinical Update
5/01/2021
Does Kefir Lower Cholesterol?
Can drinking kefir that contains probiotics, decrease LDL cholesterol or triglyceride levels in people with metabolic syndrome? See what a new study found the Cholesterol-Lowering section of our Probiotic Supplements Review. Also see our Top Picks among probiotic supplements and drinks.
Clinical Update
9/29/2020
Vitamin D and PCOS
Can vitamin D improve symptoms of (polycystic ovary syndrome (PCOS)? Find out what a recent study showed in the What It Does section of Vitamin D Supplements Review. Also see our Top Picks for vitamin D.
Clinical Update
12/01/2018
Vitamin D for Restless Legs?
Does high-dose vitamin D help women and men with restless legs syndrome? Find out what a recent study reported in the What It Does section of the Vitamin D Supplements Review. (Also see our Top Picks for vitamin D.)
Clinical Update
6/12/2019
Reaction to CoQ10 and Alpha-Lipoic Acid
An autoimmune syndrome possibly caused by CoQ10 was recently reported. It is similar to rare cases caused by alpha-lipoic acid. For details see the updates to the Concerns and Cautions sections of the CoQ10 and Alpha Lipoic Acid Reviews.
Clinical Update
6/18/2019
Melatonin for PCOS?
Can melatonin help women who suffer from polycystic ovary syndrome (PCOS)? See what a recent study found in the What It Does section of the Melatonin Supplements Review. Also see our Top Picks for melatonin.
News Release
December 12, 2006
Probiotic supplements grow in popularity but viable bacteria missing in many — ConsumerLab.com cautions consumers to select probiotics carefully and store them properly
WHITE PLAINS, NEW YORK — DECEMBER 12, 2006 — Sales of supplements containing beneficial organisms (probiotics) have grown rapidly, but a new test report from ConsumerLab.com shows that 44% contained fewer viable organisms than claimed or generally known to be effective.
Recalls & Warnings
March 16, 2006
Garden of Life, Maker of Primal Defense, Settles FTC Charges
On March 9, 2006, The Federal Trade Commission (FTC) announced that an operation that marketed dietary supplements sold at Whole Foods Market, GNC, the Vitamin Shoppe, and on the Internet settled FTC charges that they made deceptive advertising claims about their supplements.
Recalls & Warnings
November 02, 2012
Maker of Joint Health, Blood Sugar, Prostate, Ginkgo Supplements and More Warned For Drug Claims, Misbranding and Adulteration
On September 10, 2012, the FDA issued a warning letter to Global Source Management & Consulting for making drug claims about the following dietary supplements: Scientific Joint Program capsules, Alpha Lipoic Acid, Healthy Blood Sugar Diabetic Support, Dr.
Recalls & Warnings
September 14, 2021
Seller of Lion's Mane, Other Mushroom Supplements Warned by FDA
On July 20, 2021, the FDA issued a warning letter to Brilliant Enterprises LLC because it found statements made on the company's website and social media about mushroom supplements, including Lion's Mane, BoomChaga, CordaCex, and LVL:MAX to be drug claims.
Recalls & Warnings
June 02, 2022
Walmart Inc. Recalls Joint Supplements With Omega-3, Glucosamine & Curcumin
On May 28, 2022, Walmart Inc. issued a voluntary recall of all lots of Artri Ajo King Joint Supplements after FDA laboratory analysis found the presence of undeclared diclofenac.
Recalls & Warnings
May 09, 2022
Natural Organics Keto Capsules Recalled Due to Gluten
On March 6, 2022, Natural Organics, Inc. issued a recall of four lots of NaturePlus Keto Living Sugar Control Capsules that were found to contain gluten.
Recalls & Warnings
February 25, 2022
Similac, Other Infant Formulas Recalled, Linked to Illness and One Death
Update: (3/7/22) This recall has been expanded to include one lot of Similac PM 60/40 following the death of an infant who tested positive for Cronobacter sakazaki and consumed Similac PM ...
Recalls & Warnings
September 13, 2013
Metagenics Warned For Misbranding of Medical Foods and Drug Claims
On August 13, 2013, the FDA issued a warning letter to Metagenics, Inc.
Recalls & Warnings
February 22, 2021
FDA Warns Seller of Melatonin & Other Sleep Supplements
On February 18, 2021, the FDA issued a warning letter to SANA Group LLC following a review of the company's website, which found statements made about the company's products Sleep Sana Sleep Drops and Sleep Shots to be drug claims.
Recalls & Warnings
March 30, 2021
Real Water Alkaline Water Recalled for Possible Link to Liver Illness
On March 24, 2021, Real Water, Inc. recalled all sizes of Real Water bottled alkaline water because it may be linked to multiple cases of non-viral hepatitis that occurred in Las Vegas, NV in November of 2020.
Recalls & Warnings
April 17, 2020
Seller of Vitamin D, MSM, Selenium & More Warned for Drug Claims
On March 31, 2020, the FDA issued a warning letter to KetoKerri LLC following a review of the company's website, which found statements made about some of the company's products, including Dr.
Recalls & Warnings
September 08, 2020
Seller of "Diabetes Supplement" & More Warned for Drug Claims
On August 25, 2020, the FDA issued a warning letter to Nutritional Supplements Corporation Inc following a review of the company's website, which found statements made about some of the company's products, including Vitadone, Diabrex, and Viadevita to be drug claims.
Recalls & Warnings
November 29, 2016
Seller of Mineral, Joint Supplements and More Warned for Manufacturing Violations, Drug Claims
On July 1, 2016, the FDA issued a warning letter to BioGenyx-Basic Reset, following a facility inspection which found the company's products, including Ionyte, Aqualyte, Beta Factor, Bee Gold and Primo Java to be adulterated because they were prepared, packed, or held under ...
Recalls & Warnings
October 24, 2012
Manufacturer of Green Tea, Vitamin E, Omega-3 and Cranberry Supplements Warned For Manufacturing Violations, Misbranding and Drug Claims
On October 16, 2012, the FDA issued a warning letter to dietary supplement manufacturer Advanced Nutritional Technology Inc.
Recalls & Warnings
September 19, 2018
Seller of Curcumin, Garcinia, Glucosamine and More Warned for Manufacturing Violations
On September 7, 2018, the FDA issued a warning letter to Best Nutrition Products, Inc.
Recalls & Warnings
December 21, 2012
Dangerous Supplement Being Sold Under New Name
On December 21, 2012, the FDA warned consumers that Reumofan Plus, a dietary supplement promoted for arthritis and muscle pain that has been linked to serious and sometimes fatal side effects, is now being sold under the name WOW.
Recalls & Warnings
August 22, 2012
FDA Warns of Life-Threatening Side Effects and Withdrawal Symptoms from Two Arthritis, Muscle Pain Supplements
On August 21, 2012, the FDA issued a warning to consumers about the dangers of taking Reumofan Plus and Reumofan Plus Premium, two dietary supplements marketed for arthritis, osteoporosis and muscle pain.
Recalls & Warnings
February 20, 2013
Recall: Arthritis and Muscle Pain Supplement Contains Prescription Drugs
On February 15, 2013, Reumofan Plus USA, LLC and Reumofan USA, LLC announced a recall of Reumofan Plus, a dietary supplement promoted for arthritis and muscle pain, because it was found to contain the active pharmaceutical ingredients methocarbamol, dexamethasone, and diclofenac.
Recalls & Warnings
October 18, 2012
Natural Product Manufacturer Warned For GMP Violations, Misbranding, Unapproved Devices and Drug Claims
On August 28, 2012, the FDA issued a warning letter to Creation's Garden Natural Products, Inc. following an inspection of the company's manufacturing facility, which found violations of Current Good Manufacturing Practices (CGMPs) for dietary supplements.
Recalls & Warnings
May 20, 2015
Gluten Found in More Than Half of Popular Probiotic Supplements Tested
Tests of 22 popular probiotic supplements revealed that 12 contained detectable amounts of gluten, according to researchers at the Celiac Disease Center at Columbia University Medical Center.
Recalls & Warnings
November 20, 2013
OxyElite Pro Recall Expanded
On November 19, 2013, USPlabs LLC expanded its recall of OxyElite Pro products to include Raspberry Lemonade OxyELITE Pro Super Thermo Powder (4.6 oz., UPC #094922447494).
Recalls & Warnings
October 09, 2013
FDA Warns Consumers Not to Use OxyElite Pro As It Investigates Link With Hepatitis
On October 8, 2013, the FDA warned consumers not to buy or use USPLabs’ weight loss supplement OxyElite Pro because it has been linked with 24 cases of acute non-viral hepatitis in Hawaii.
