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Acai Berry (1)
Acetyl-L-Carnitine Supplements (11)
Alginate Supplements (For Reflux) (4)
Aloe Juices, Gels, and Supplements (2)
Alpha-Lipoic Acid Supplements (10)
Apple Cider Vinegar (12)
Ashwagandha Supplements (34)
Astaxanthin Supplements (5)
Avocado Oil (5)
B Vitamin Supplements (181)
Berberine Supplements (11)
Bone Broth (2)
Calcium Supplements (46)
Cancer Prevention (1)
CBD & Hemp Extract Supplements (60)
Chia Seed (3)
Cholesterol-Lowering Supplements (Sterols/Stanols and Policosanol) (12)
Choline Supplements (20)
Chromium Supplements (1)
Cinnamon Supplements and Spices (23)
CLA Supplements (2)
Cocoa Powders, Dark Chocolate, Extracts, Nibs & Supplements (64)
Coconut and MCT Oils (14)
Coconut Waters (2)
Collagen Supplements (41)
CoQ10 and Ubiquinol Supplements (47)
Cranberry Juices and Supplements (19)
Digestive Enzymes (10)
D-Mannose Supplements (3)
Echinacea Supplements (3)
Elderberry Supplements (5)
Electrolytes (3)
Essential Oils (6)
Evening Primrose & Flaxseed (ALA/GLA) (11)
Extra Virgin Olive Oil (41)
Fish Oil /Omega-3 Fatty Acid Supplements (246)
Flaxseed (9)
Fruits, Veggies, and Other Greens Supplements (15)
GABA Supplements (3)
Garcinia Cambogia (HCA) Supplements (6)
Garlic Supplements (12)
Ginger Supplements (18)
Ginkgo Supplements (8)
Ginseng Supplements (10)
Gluten-Free Grains (1)
Green Coffee Bean Extract Supplements (2)
Green Tea Supplements and Drinks (63)
HGH - human growth hormone (1)
Hoodia Supplements (1)
Huperzine A Supplements (2)
Inactive Ingredients (11)
Iron Supplements (44)
Joint Health for Animals (12)
Joint Health Supplements (25)
Kelp (Supplements) (4)
Lactose Intolerance Products (1)
L-Arginine Supplements (23)
L-Citrulline Supplements (2)
Lion's Mane and Chaga Mushroom Supplements (9)
Low-Dose Lithium Supplements (6)
L-Theanine Supplements (9)
L-tryptophan and 5-Hydroxy-L-tryptophan (5-HTP) (4)
Lycopene Supplements (7)
Lysine Supplements (1)
Maca Supplements (2)
Magnesium Supplements (66)
Melatonin Supplements (82)
Menopause Supplements (21)
Milk Thistle Supplements (4)
Multivitamin and Multimineral Supplements (37)
Muscle & Workout Supplements (Creatine and BCAAs) (34)
NAC (N-Acetyl Cysteine) Supplements (24)
NAD Boosters (NAD+/NADH, Nicotinamide Riboside, and NMN) (17)
Nutrition Bars (4)
Oats (Rolled and Steel-Cut) Review (15)
Olive Leaf Extract (1)
Phosphatidylserine Supplements (2)
Plant Based Milks (11)
Pomegranate Juice and Supplements (1)
Potassium Iodide/Iodate (Radioprotective Agents) (1)
Potassium Supplements (18)
PQQ (Pyrroloquinoline Quinone) (2)
Prebiotics (11)
Probiotics (145)
Prostate Supplements (Saw Palmetto and Beta-Sitosterol) (12)
Protein Powders (81)
Psyllium Fiber Supplements (14)
Quercetin & Rutin Supplements (14)
Red Yeast Rice Supplements (26)
Reishi Mushroom Supplements (10)
Resveratrol (Red Wine, Knotweed and Other Sources) (18)
Saffron Supplements (4)
SAMe Supplements (6)
Seaweed Snacks and Foods (3)
Selenium Supplements (13)
Sexual Enhancers (4)
Shelled Walnuts (Halves & Pieces) (2)
St. John's Wort Supplements (5)
Taurine Supplements (1)
Tuna, Salmon & Sardines (29)
Turmeric and Curcumin Supplements and Spices (113)
Valerian Supplements (5)
Vision Supplements with Lutein, Zeaxanthin & AREDS2 Formulas (28)
Vitamin A Supplements (9)
Vitamin C (43)
Vitamin D Supplements (322)
Vitamin E Supplements (23)
Vitamin K Supplements (18)
Water Filter Pitchers (29)
Weight Loss Supplements (7-Keto DHEA, Forskolin and Stimulant Blend Supplements) (3)
Wellbutrin vs. Generic Bupropion (2)
Zinc Supplements, Lozenges, and Melts Review (26)
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Psyllium Fiber Supplements

Psyllium Serving Size

October 08, 2024
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A CL member pointed out that a popular brand of psyllium incorrectly lists its serving size. We confirmed this with the manufacturer. For the correct information, see our Psyllium Supplements Review, which includes our Top Pick for psyllium.

Allergy to Metamucil

May 21, 2024
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Asthma and allergic reactions to psyllium fiber supplements, including Metamucil, have been reported, although not common. Get the details in the Concerns and Cautions section of our Psyllium Review, which includes our Top Picks for psyllium.

Lead in Meta Mucil

March 12, 2024
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A CL member asked why Meta Mucil 4-in-1 Fiber powder was not tested by us this year. It is because of the lead contamination we found when we tested it in 2021, as noted in our recent report. Hoping to find less contamination, this year we tested Meta Mucil 3-in-1 capsules, as well as Meta Mucil Fiber Gummies (a prebiotic).

See our Top Picks among psyllium fiber and prebiotic fiber supplements.

Ulcerative Colitis

January 30, 2024
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Find out if drinking coconut water or taking psyllium helped people with active ulcerative colitis in recent studies. Also see our Top Picks among coconut waters and psyllium supplements.

Lead in Metamucil

December 22, 2023
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A recently filed lawsuit alleges that Proctor & Gamble failed to disclose "dangerous" amounts of lead in a variety of Metamucil products. Get the details, by product, in our Psyllium Fiber Supplements Review, which includes our tests of Metamucil and our Top Picks among psyllium fiber supplements.

Constipation & Supplements

October 10, 2023
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Find out which supplements medical experts recommend for chronic versus occasional constipation. See the Laxative use section of our Psyllium Supplements Review, which includes our Top Pick among products.

Also see: Which supplements and foods help relieve constipation and which can cause constipation?

Best Fiber Supplement for Constipation?

May 31, 2023
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Which type of fiber supplement is best for treating mild, chronic constipation? See what experts recommend, and why, in the What It Does section of our Psyllium Supplements Review.

Counterfeit Supplements

May 05, 2023
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Counterfeit versions of psyllium, a multivitamin, magnesium, and eight other types of supplements from a major brand have been sold online. Details and how to avoid this are in our Psyllium Supplements Review.

A popular brand of mushroom supplements has also reported counterfeit versions of its products. Details and how to avoid this are in our Lion's Mane Review.

Psyllium: Viva Naturals

March 28, 2023
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Concerned about lead found by ConsumerLab in psyllium supplements, a CL member asked Viva Naturals about the quality of its Organic Psyllium Husk Powder, which was not tested by ConsumerLab. Viva provided its quality specifications for the product. See how this compares to amounts of lead actually found in competing products in the Update to the Psyllium Fiber Supplements Review. Also see our Top Picks among psyllium supplements.

Psyllium for Colitis?

February 28, 2023
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Can supplementing with psyllium help maintain remission in people with ulcerative colitis? Find out what research suggests in our Psyllium Supplements Review.

Also see our answer to the question: Do any supplements help for ulcerative colitis?

ColonBroom

August 12, 2022
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A CL Member recently asked us how ColonBroom, which is heavily promoted, compares to other psyllium fiber supplements. Find out in our Psyllium Fiber Supplements Review.

Psyllium for Uncontrolled Bowel Movements

March 25, 2022
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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.