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Product Review
Reishi (Mushroom) Supplements Review
Little to No Mushroom Found in Some Reishi Supplements
CL Answer
What is the ingredient zeolite I see in Natural Cellular Defense and other detox supplements? Does it help in any way?
Learn what zeolite is and why it is found in many detox supplements like Waiora's Natural Cellular Defense, Get Healthy Again Zeolite, and Ultra Liquid Zeolite.
CL Answer
Dimethyl sulfoxide (DMSO): Health Effects & Safety Concerns
Dimethyl sulfoxide (DMSO) is a colorless liquid promoted for osteoarthritis, interstitial cystitis, tennis elbow, rotator cuff tendonitis, wound healing, and many other conditions. Find out if it works and if it's safe.
Product Update
9/16/2025
Arsenic in Mushroom Supplement?
Arsenic, lead, and cadmium above "Actions Levels" were recently report in a Host Defense mushroom product. Should you be concerned? Get our take on this in our Lion's Mane & Chaga Supplements Review. Also see our Top Picks for lion's mane, chaga, and reishi supplements.
Clinical Update
10/27/2023
Information to Avoid Counterfeits Added for 7 Brands
We've added information about how to safely purchase products from Bragg, Centrum, Gaia Herbs, Host Defense, Nutricost, Vital Proteins, and Vitamin Shoppe to our article about Where to Safely Buy Real Vitamins and Supplements. The list now covers 39 brands.
Clinical Update
3/19/2024
Probiotic for COVID?
Did a probiotic promoted to support immune defenses against COVID-19 help prevent or treat COVID-19? Find out in our Probiotics Supplements Review, which includes our Top Picks among probiotics.
Also see: Do any supplements help with COVID-19? Do supplements like vitamin D, zinc, vitamin C, or herbals work?
Clinical Update
2/18/2025
PFAS in Oral-B?
Does Oral-B Glide Advanced Bacteria Defense Floss contain PFAS (“forever chemicals”)? Find out in our article about PFAS, which includes our Top Picks among flosses, dental picks, and dental tapes, and information for more than 85 different products.
News Release
August 22, 2019
Best Reishi Mushroom Supplements Identified by ConsumerLab
White Plains, New York, August 22, 2019 — Reishi mushroom supplements are promoted for many uses, from strengthening the immune system and lowering blood sugar, to improving cardiovascular health and reducing cancerous tumors.
Recalls & Warnings
July 23, 2025
FDA Warns Seller of Allegro Eye Drops, Tea Tree Oil Eyelid Wipes, and More
On July 9, 2025, the FDA issued a Warning Letter to Scope Health Inc.
Recalls & Warnings
October 05, 2023
Counterfeit Pure Encapsulations and GutConnect 365 Sold on Amazon
On September 26, 2023, a man from New Jersey was arrested for selling fake versions of Pure Encapsulations L-Glutamine and Nature MD's GutConnect 365 on Amazon.
Recalls & Warnings
December 01, 2021
FDA Warns Seller of Saffron Supplements
On November 18th, 2021, the FDA issued a warning letter to Saffron Health Sciences following a review of the company's website, social media, and Amazon product listings, which found statements made about the company's products Crocin Rich, Crocin Rich II, and Crocin Rich ...
Recalls & Warnings
March 02, 2021
FDA Warns Makers of Four Hand Sanitizers, Two With Toxic Ingredient
Between February 18 and 25, 2021, the FDA issued warning letters to four sellers of hand sanitizers because laboratory tests showed that their products do not contain the amount of ethanol as stated on their labels.
Recalls & Warnings
March 29, 2020
FDA Warns Seller of Nasal Spray Promoted for Coronavirus
On March 26, 2020, the FDA issued a warning letter to Corona-cure.com for selling products with unsupported claims that they can treat coronavirus (COVID-19).
Recalls & Warnings
June 30, 2020
FDA Warns Seller of Alpha Lipoic Acid, Berberine, and More
On June 18, 2020, the FDA issued a warning letter to Only Natural, Inc. dba Bio Nutrition, Inc.
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
January 30, 2013
Maker of Cold and Flu Supplement Warned For Making Drug Claims
On January 24, 2013, the FDA and FTC jointly issued a warning letter to Flu and Cold Defense LLC, after a review of the company's website and marketing materials found statements made about the cold and flu dietary supplement GermBullet to be drug claims.
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
October 01, 2016
No Evidence Supplement Can Reverse or Prevent Gray Hair, Says FTC
On September 23, 2016, the FTC announced a U.S. district court has issued a judgement prohibiting the makers of Grey Defence dietary supplements from making claims the products can reverse or prevent grey hair, unless they are not misleading and are supported by reliable scientific evidence.
Recalls & Warnings
December 19, 2011
DMAA Supplements Pulled from Military Stores After 2 Deaths
On December 5, 2011 Stars and Stripes reported that, according to the Defense Logistics Agency, bodybuilding supplements containing DMAA were recently pulled off the shelves at Army and Air Force Exchange Service stores due to concerns they could be related to soldier deaths.
Recalls & Warnings
June 16, 2020
FDA Warns Four Companies for Unsafe "Homeopathic" Injectables
On June 16, 2020, the FDA issued warning letters to four manufacturers of unapproved injectable drugs labeled as homeopathic.
Recalls & Warnings
May 23, 2020
BIOTA Biosciences Recalls Injectable CBD and Curcumin Products
On May 20, 2020, BIOTA Biosciences LLC issued a recall of five lots of three injectable products because they were marketed without FDA approval.
Recalls & Warnings
May 12, 2020
Plum Dragon Herbs Warned for Coronavirus Claims
On May 8, 2020, the FDA issued a warning letter to Plum Dragon Herbs, Inc. for selling Chinese medicine products with unsupported claims that they can treat coronavirus (COVID-19).
Recalls & Warnings
April 25, 2020
Injectable Curcumin, CBD Are Not Safe, Warns FDA
On April 9, 2020, the FDA issued a warning letter to BIOTA Biosciences LLC following a review of the company's website, which found statements made about some of the company's, products, including Canabidiol (CBD) Complex, Cannabidiol+Curcumin, and Curcumin Complex to be ...
Recalls & Warnings
May 12, 2018
Seller of Maca Powder Warned for Drug Claims
On April 18, 2018, the FDA issued a warning letter to Herbs America, Inc. following review of the company's website, and the company's Maca Magic store on www.amazon.
Recalls & Warnings
November 21, 2014
Seller of "Ebola" Supplement Warned for Drug Claims
On November 18, 2014, the FDA issued a warning letter to the seller of dietary supplement Ebola-C, following a review of the company's website, www.ebola-c.com, which found statements made about the product to be drug claims.
Recalls & Warnings
May 05, 2003
FDA Reports False Claims by Maker of HGH Supplement
On April 30, 2003, the Food and Drug Administration (FDA) announced that Nature's Youth, LLC, of Centerville, Mass., has completed its voluntarily destruction of approximately 5700 boxes (each containing a 30-day supply) of its misbranded product, "Nature's Youth hGH.
Recalls & Warnings
November 26, 2012
Court Injunction Halts Sale of Cholesterol, CoQ10, Progesterone, Prostate Supplements and More
On November 20, 2012, Pharmacist's Ultimate Health agreed to cease sales and distribution of its dietary supplements by entering into a Consent Decree of Permanent Injunction in the U.S. District Court of Minnesota.
Recalls & Warnings
February 17, 2015
Seller of Muscle Supplements Containing Synthetic Steroids Warned
On February 9, 2015, the FDA issued a warning letter to A2Z Industries, LLC, following a facility inspection which found the company's muscle enhancing supplements, including HaloV and EPI2A3A to be labeled as containing synthetic steroids.
