Showing Results for Reishi (Mushroom)
Reishi Mushroom Supplements
Make sure the reishi supplement you take passed our quality review. We found enormous variation in amounts of beta-glucan and other compounds. And be sure that you understand the important differences between products made with reishi fruiting body (the mushroom) vs. the mycelium. See the Review now!
Reishi Mushroom Supplements Review
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CL Answer
Do reishi mushroom supplements boost the immune system, or have other health benefits?
Learn more about the health benefits of reishi mushroom extract supplements, including evidence from clinical studies on cancer and diabetes, plus information about safety and price.
Product Review
Prostate Supplements Review (Saw Palmetto and Beta-Sitosterol)
Find the Best Prostate Supplement for Symptoms of BPH. See Which Prostate Supplement Passed or Failed CL's Tests of Quality.
Clinical Update
1/14/2022
Liver Injury With Reishi
Although very rare, liver injury has occurred in people taking reishi mushroom. Learn more, including details of a recent report, in the Concerns and Cautions section of our Reishi Mushroom Supplements Review.
News Release
2/25/2023
Top-rated Vitamin and Supplement Brands and Merchants for 2023 Based on Consumer Satisfaction
White Plains, New York, February 25, 2023 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 8,600 responses collected in November/December 2022.
CL Answer
Do any supplements help prevent or treat a cold?
Are there supplements that can help prevent or treat cold symptoms? Learn more about zinc, probiotics, vitamin C and more.
CL Answer
Can any supplements improve or worsen symptoms of fibromyalgia?
Find out if any supplements may help improve fibromyalgia symptoms, learn which supplements do not seem beneficial, and find out if any supplements worsen symptoms.
Product Review
Green Coffee Bean Extract Supplements Review (for Weight Loss)
Choose the Best Green Coffee Bean Extract. 50% of Green Coffee Bean Extract Supplements Don't Deliver Expected Ingredients.
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.
Recalls & Warnings
2/02/2021
FDA Warns Seller of Reishi Mushroom Supplements
On January 6, 2021, the FDA issued a warning letter to Entia Biosciences, Inc following a review of the company's website, which found statements made about the company's products Lion's Mane - All Natural Supplement, Antrodia Mushroom Powder, Maitake Mushroom Powder, Reishi ...
Product Review
Lion's Mane and Chaga Supplements Review
Read Labels Carefully -- Many Can Mislead
CL Answer
When taking a statin drug like Lipitor or Crestor, are there supplements I should avoid or take?
Learn about the interactions between certain supplements and atorvastatin (Lipitor), rosuvastatin (Crestor), and other cholesterol-lowering statins.
Clinical Update
10/12/2021
Mushrooms and Blood Sugar
Find out if supplementing with reishi or oyster mushrooms helps with blood sugar control. See what the latest research showed in our Reishi Mushroom Supplements Review.
Clinical Update
10/12/2021
Mushrooms and Gut Bacteria
Do mushroom powders have beneficial effects on gut bacteria? See what a preliminary study found in the What It Does section our Reishi Mushroom Supplements Review.
Product Review
Fruits, Veggies, and Other Greens Supplements Review (Including Spirulina and Chlorella)
Fruit and Veggie Supplements -- Find Out If They Are Worthwhile and See Our Test Findings
Recalls & Warnings
4/02/2021
FDA Warns Sellers of Prostate, Reishi, Immune Products, and More
On March 16, 2021, the FDA issued warning letters to two companies following reviews of their websites which found statements made about the companies' products to be drug claims.
CL Answer
What supplements should I stop taking before surgery?
Info on which supplements to avoid before surgery due to increased risk of bleeding or interference with anesthesia.
Product Review
Protein Powders, Shakes, and Meal Replacements Review
Find Out Which Protein Products Passed or Failed Our Tests
CL Answer
Is there evidence that d-limonene can help fight cancer?
Find out if d-limonene can help fight cancer or help for GERD (gastroesophageal reflux disorder), including evidence from clinical studies.
News Release
10/06/2022
Lion’s Mane and Chaga Supplement Labels May Mislead, According to ConsumerLab Tests
White Plains, New York, October 6, 2022 — Lion’s mane and chaga supplements are often promoted to improve memory and mood, boost the immune system, and a range of other health benefits.
Recalls & Warnings
9/14/2021
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.
CL Answer
With herbal supplements, what is the difference between root powder and root extract? Does it matter?
Learn more about the different forms of herbal supplements, including aloe, boswellia, ginkgo, green tea, and milk thistle.
CL Answer
Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Find out if supplements such as vitamin E, fish oil, milk thistle, curcumin, choline, probiotics, vitamin D, reishi mushroom, or extra virgin olive oil are beneficial for fatty liver disease and learn which diet (Mediterranean, ketogenic, DASH, or fasting diets) seems to have greatest benefit.
Recalls & Warnings
12/15/2020
Mushroom Supplement Seller Warned for Drug Claims
On December 4, 2020, the FDA issued a warning letter to Desert Alchemist LLC following a review of the company's website, social media, and Etsy.com store (www.etsy.
Clinical Update
6/21/2022
Muscle Weakness from Mushrooms?
Be aware that, although rare, mushrooms and mushroom supplements may trigger a rare autoimmune reaction resulting in muscle pain or weakness. Get the details in the Concerns and Cautions section of our Reishi Supplements Review.
Clinical Update
12/09/2022
Mushroom Supplement Interaction
Can mushroom supplements interfere with tests for fungal infections? Find out in the Concerns and Cautions section of the Lion's Mane and Chaga Supplements Review as well as in our Reishi Supplements Review.
CL Answer
Does AHCC (active hexose correlated compound) have anticancer or antiviral benefits, and is it safe?
Learn about AHCC (active hexose correlated compound), including whether it is beneficial for liver, pancreatic, or prostate cancer, chemotherapy-related side effects, or the flu, and if it is safe.
Recalls & Warnings
5/18/2023
EarthLab, Inc. Warned for Promoting Green Tea, Curcumin, Elderberry & More to Treat Stroke, Cancer & Flu
On April 27, 2023, the FDA issued a warning letter to EarthLab, Inc., dba Wise Woman Herbals, following inspection of the company’s website which found statements about the company’s Green Tea Solid Extract, Curcuma Spp.
CL Answer
Do hair loss supplements, such as Viviscal, Hair La Vie, and Nutrafol, or topical essential oils work?
Vitamins and supplements that may help with hair loss and thinning, including saw palmetto, beta-sitosterol, protein, iron, and vitamin D.
CL Answer
Tablets I purchased are becoming "crumbly" after a few weeks and are easy to break. Is there a problem with this supplement?
Should you be concerned if your supplement tablets have started to crumble? Learn more including the best way to keep pills from getting soft.
CL Answer
Which supplements or foods can help lower cholesterol and keep my heart healthy? Are there any to avoid?
Information about heart health supplements & vitamins that help with cholesterol, including sterol esters, CoQ10, and vitamin D, and which may be bad for the heart, like calcium.
Recalls & Warnings
2/17/2018
FDA Warns Seller Reishi Mushroom Supplements
On February 7, 2018, the FDA issued a warning letter to Reishi D. International, Inc., following a facility inspection which found the company's Reishi D.
Recalls & Warnings
12/09/2021
FDA Warns Seller of Curcumin, Lion's Mane, Quercetin & More
On November 9, 2021, the FDA issued a warning letter to Synaptent, LLC because it found statements on the company's website about its products, including Berberine HCL, Curcumin, Lion's Man, Milk Thistle, Quercetin, Boswellia Serrata Extract, and Garlic Extract to be ...
Recalls & Warnings
12/02/2020
Seller of Vitamin C, Elderberry, Silver, and More Warned for COVID-19 Claims
On November 10, 2020, the FDA issued a warning letter to Sage Woman Herbs, Ltd.
Recalls & Warnings
12/15/2020
FDA Warns Seller of Evening Primrose Oil and Beta Glucan
On December 2, 2020, the FDA issued a warning letter to Smoky Mountain Naturals, LLC following a review of the company's website, which found statements made about the company's products Evening Primrose Oil and Beta Glucan to be drug claims.
Recalls & Warnings
2/22/2021
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
2/22/2021
FDA Warns Sellers of St. John's Wort
On February 18, 2021, the FDA issued warning letters to two companies following reviews of the companies' websites, which found statements made about the companies' St. John's Wort products to be drug claims. These products include St.
Recalls & Warnings
9/03/2019
Federal Court Shuts Down Two Supplement Companies Selling Weight, Joint Health and Other Supplements
On September 3, 2019, a U.S. District Court entered a consent decree of permanent injunction against Basic Reset and Biogenyx, two Tennessee-based companies that sell dietary supplements and other product promoted for health benefits.
Clinical Update
4/19/2022
Shiitake Mushroom Rash
If not properly prepared, shiitake mushrooms can cause a distinctive skin rash, as noted in recent reports. The details are in our article about ergothioneine, a potentially beneficial compound found in shiitake and other mushrooms.
Recalls & Warnings
3/30/2019
FDA Warns Seller of Reishi, Joint Supplements, Ginseng & More for Pesticides, Other Violations
On March 12, 2019, the FDA issued a warning letter to Yanqing "Michael" Li and Chang Su, owners of the website http://www.woohoonatural.
Clinical Update
7/01/2022
Mushroom Compound for HPV?
Active hexose correlated complex (AHCC), produced from mushrooms, may help clear persistent, high-risk human papilloma virus (HPV) infection in women, according to a recent study. Get the details in the Antiviral Effects section of our CL Answer about AHCC.
Clinical Update
4/15/2022
Mushrooms for Lowering Cholesterol?
The beta-glucan in oats can help lower elevated levels of cholesterol, but can the beta-glucan in mushrooms do the same? Find out in our article about Supplements and Foods for Lowering Cholesterol.
Recalls & Warnings
5/23/2020
FTC Warns 50 More Companies for Coronavirus Claims
On May 21, 2020, the FTC announced that it sent warning letters to 50 companies for selling products such as herbal products, immune system boosters, and vitamin C, with unsupported claims that they can treat coronavirus (COVID-19).
Recalls & Warnings
9/28/2017
Seller of Prostate, Reishi Supplements Warned for Manufacturing Violations
On September 11, 2017, the FDA issued a warning letter to Vicare International (USA), Inc.
Clinical Update
5/05/2023
Counterfeit Supplements
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.
Recalls & Warnings
5/30/2017
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.
News Release
2/25/2022
Top-rated Vitamin and Supplement Brands and Merchants for 2022 Based on Consumer Satisfaction
White Plains, New York, February 25, 2022 — Each year, ConsumerLab.com surveys its free e-newsletter subscribers about the vitamins and supplements that they use. The results below are based on 8,049 responses collected in November/December 2021.
Recalls & Warnings
11/14/2012
Mushroom Supplement Manufacturer Warned For Drug Claims and Adulteration
On October 18, 2012, the FDA issued a warning letter to Mushroom Wisdom, Inc. following a facility inspection and product label review which found the dietary supplements Amyloban 3399 From Lion's Mane, Grifron Maitake, and Super Shiitake to be promoted as drugs.
Recalls & Warnings
4/26/2013
Seller of Immune, Cholesterol, Liver and Blood Sugar Products Warned For Drug Claims
On March 20, 2013, the FDA issued a warning letter to Birkdale Medicinals LLC, following a review of the company's website which found statements made about Birkdale products, including Immune Response 247, Cholestat, Silymarin 81 and LevelStat, to be drug claims.
News Release
8/22/2019
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
8/27/2013
Immune Supplement Recalled Due To Undeclared Milk
On August 23, 2013, Reaction Nutrition, LLC issued a voluntary recall of immune support supplement LIVE CLINICAL 90 CAPS because it contains undeclared milk.
Recalls & Warnings
3/23/2023
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.
Recalls & Warnings
12/29/2022
EarthLab, Inc. Warned for Promoting Curcumin, Elderberry to Treat Pain & Flu
On November 10, 2022, the FDA issued a warning letter to EarthLab, Inc., dba Wise Woman Herbals following inspection of the company’s website which found statements about the company’s products to be drug claims because they suggest the products can prevent or treat disease.
Recalls & Warnings
7/10/2021
FDA Warns Seller of Omega XL
On June 31, 2021 the FDA issued a warning letter to Great Healthworks, Inc. following a review of the company's website, which found statements made about Omega XL and ProbioticXL supplements to be drug claims.
Recalls & Warnings
5/08/2021
FDA Warns Seller of Vitamins B12, C, D, and K
On April 7, 2021, the FDA issued a warning letter to Unived Inc following a review of the company's websites, which found statements made about the company's products Unived brand Colox, CalDveg, B12+D3, and D3+K2-7 to be drug claims.
Recalls & Warnings
5/08/2021
Seller of Immune Bio Green Cell Warned by FDA
On March 30, 2021, the FDA issued a warning letter to Immune & Genetics Protocols, LLC following a review of the company's websites, which found statements made about the company's product Immune Bio Green Cell to be drug claims.
Recalls & Warnings
8/30/2012
FDA Warns of Medical Claims Made For Numerous Chinese Herbal Products
On August 15, 2012, the FDA warned Dragon Herbs that promotional statements made on the company's website constitute drug claims for twenty herbal products, including CardioPro 2000, Cordyceps, Duanwood Reishi, Gynostemma, Ginseng and Astragalus Combination, Dang Gui and Gelatin, Sweet Relief, ...
Recalls & Warnings
10/08/2019
Seller of Tea, Colloidal Silver, Homeopathic Products Warned for Manufacturing Violations
On September 12, 2019, the FDA issued a warning letter to Herbal Healer Academy, Inc.
Recalls & Warnings
7/23/2019
FDA Warns Seller of CBD Lotions, Patches, Tinctures and Pet Products
On July 22, 2019, the FDA issued a warning letter to Curaleaf, Inc.
Recalls & Warnings
7/16/2019
FDA Warns Seller of Magnesium and CBD
On July 9, 2019, the FDA issued a warning letter to Ceba-Tek, Inc.
Recalls & Warnings
8/20/2019
Seller of Liposomal Curcumin, Vitamin C & Melatonin Warned for Manufacturing Violations
On August 6, 2019, the FDA issued a warning letter to Let's Talk Health, Inc.
Recalls & Warnings
6/19/2008
FDA Warns Groups to Stop Selling Fake Cancer 'Cures'
On June 17, 2008, the FDA reported that it had sent Warning Letters to 23 U.S. companies and two foreign individuals marketing a wide range of products fraudulently claiming to prevent and cure cancer.
Recalls & Warnings
4/21/2020
Life Force Warned for Colloidal Silver, Nitric Oxide Claims
On March 27, 2020, the FDA issued a warning letter to Doctor's Signature Sales and Marketing International Corp.
Recalls & Warnings
4/14/2020
FTC Warns Companies Selling Immune "Boosters," Vitamin C and More for Coronavirus Claims
On April 14, 2020, the FTC announced that it has sent warning letters to ten companies for selling products such as immune boosters, silicone facial brushes, air purifiers, and intravenous vitamin C with unsupported claims that they can treat coronavirus (COVID-19).
Recalls & Warnings
3/26/2019
Seller of NeuSilver Colloidal Silver for Adults, Children and Pets Warned by FDA
On February 19, 2019, the FDA issued a warning letter to iMedDo, Inc., following a review of the company's website, http://www.imeddo.
Recalls & Warnings
6/05/2018
FDA Warns Seller of Colloidal Silver
On May 17, 2018, the FDA issued a warning letter to Silver Armor, Inc.
Recalls & Warnings
8/01/2017
FDA Warns Seller of Acai, Garcinia & More for Drug Claims
On July 25, 2017, the FDA issued a warning letter to Absonutrix, following a review of the company's website, www.absonutrix.com, which found statements made about some of its products to be drug claims.
Recalls & Warnings
7/18/2017
FDA Warns Seller of "Quick Slim with pure Hoodia Gardonii" and "Diabalance Herbal Blood Sugar Balance"
On July 11, 2017, the FDA issued a warning letter to Black Seed Herb, Inc.
Recalls & Warnings
6/27/2017
Seller of Alpha Lipoic Acid, Cinnamon Supplements and More Warned For Manufacturing Violations
On May 1, 2017 the FDA issued a warning letter to Nature's Vision, Inc.
Recalls & Warnings
6/10/2017
Seller of Prostate, Immune Supplements & More Warned for Manufacturing Violations
On May 25, 2017 the FDA issued a warning letter to The Herbalist, Inc.
Recalls & Warnings
6/06/2017
Seller of Herbal Supplements Warned for Manufacturing Violations, Drug Claims
On May 25, 2017 the FDA issued a warning letter to Life Rising Corporation, following a facility inspection which found the company's products, including Stomach Regulator, Fang Feng Formula, Skin Regulator, Regulate Liver, Circulation Regulator, Pancreas Support, Lung Regulator, Pure Tea, ...
Recalls & Warnings
6/07/2013
Maker of Colloidal Silver and Mushroom Extract Supplements Warned For Manufacturing Violations and Drug Claims
On May 2, 2013, the FDA issued a warning letter to Earthborn Products, Inc.
Recalls & Warnings
5/03/2002
More Information on Recall of PC-SPES - Prostate Supplement
The FDA's May 1, 2002 Enforcement Report classified the recall of PC-SPES as a Class I recall. The recall was originally announced by its manufacturer in February with additional warnings from the FDA issued in March (see the 3/11/02 posting on ConsumerLab.
Recalls & Warnings
11/21/2014
Seller of Silver Supplement Warned for Claiming to Treat Ebola and Other Viruses
On November 19, 2014, the FDA issued a warning letter to LifeSilver.com, following a review of the website, which found statements made about Silver sol to be drug claims.
