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Product Review

Greens and Whole Food Powders and Supplements Review (Including Chlorella and Spirulina)

See How Powdered Vegetables, Fruits, and Algae Compare and Avoid Problems

Recalls & Warnings


Seller of Omega-3, Probiotics & SuperFoods Warned for Manufacturing Violations, Drug Claims

On May 4, 2015, the FDA issued a warning letter to Dr. Dennis Black, LLC., following a facility inspection which found the company's products, including Superfood Single, SuperFood Single Powder, Superfood Double Capsules, Superfoods Family Capsules, Superfood Family Powder, Grab-N-Go Daily, Cleansing Combo Pak, Supersilver Solution, Royal Tea, Omega Oil 3,6,9, Probio Boost, CleanseMax, ParaMax Cleanse and Heavy MetalMax to be adulterated because they prepared, packed, or held under conditions that violate Current Good Manufacturing Practices for dietary supplements.

Product Review

Green Tea Review: Tea Bags, Loose Tea, Matcha Powders, and Supplements

Disturbing Findings for Some Major Brands of Green Tea. See the Test Results and Our Top Picks for Green Tea.

Green Tea Review By

News Release


Caution With Spirulina Supplements: ConsumerLab Tests Reveal Lead Contamination, Quality Concerns

White Plains, New York, February 9, 2022 — Problems were discovered in three out of four spirulina supplements recently tested by ConsumerLab. One product was found to be contaminated with lead, and two other products, which were tablets, failed to disintegrate within the expected time. In fact, the tablets for both products remained almost completely intact even with extended time, raising concerns that the ingredients may not be properly released into the digestive system. ConsumerLab also tested three chlorella supplements, all of which passed testing.

News Release


Contamination Still an Issue in Some Greens and Whole Food Products, ConsumerLab Tests Reveal

White Plains, New York, January 31, 2019 — Powders and capsules containing ingredients such as wheat grass, spirulina, chlorella, and fruits and vegetables are a popular way to get vitamins, minerals and other plant-based nutrients, but past tests by ConsumerLab have found that these products can also be contaminated with toxic heavy metals such as lead and arsenic. Contamination with pesticides and pathogenic bacteria can also be a concern. So which greens and whole food powders and capsules on the market provide the best quality and value, without contamination?  

News Release


Big Differences Found Among Green Teas -- ConsumerLab Tests Identify Best Green Tea in Bags, Matcha, Supplements, and Bottles --

White Plains, New York, May 10, 2018 — The benefits of green tea use are associated with the presence of natural polyphenols known as catechins, such as EGCG. But how much EGCG is really in green tea products on the market, and how do these products compare in terms of quality, cost, and taste?

News Release


ConsumerLab Finds Lead, Cadmium and Arsenic Contamination in Greens and Whole Foods Supplements

White Plains, New York, August 9, 2016 — Powders, pills and drinks made from ingredients like wheat grass, alfalfa, kelp, spirulina, chlorella, leafy vegetables and fruits are a popular choice for people looking to increase their intake of vitamins, minerals and other plant-based nutrients. However, recent tests by of "greens" and "whole foods" products revealed that four of 13 products exceeded limits for lead. One of these four was also contaminated with cadmium, while another was contaminated with arsenic. The findings were confirmed in a second, independent laboratory.