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Just 75% of Bilberry Supplements Pass Testing

August 1, 2013

Only 75% of the bilberry extract products surveyed passed testing for authenticity, purity, and the ability of tablets to properly disintegrate.

In a recent examination of bilberry extract, a popular ingredient that may help improve vision and have other health benefits,, White Plains, NY, found that only 75% of the products surveyed passed testing for authenticity, purity, and the ability of tablets to properly disintegrate. One supplement contained only 62% of its promised bilberry compounds and appeared not to be authentic, and another failed to break apart fast enough in disintegration testing.
The use of non-authentic bilberry is well known in the supplement industry, driven by the relatively high cost of European bilberry and the availability of less expensive, non-authentic ingredients, particularly from China. European bilberry has a distinctive profile of antioxidant anthocyanoside compounds. Non-authentic bilberry ingredients are generally spiked with anthocyanosides from other plants, such as other species of berries or even black soybean hull. Americans purchased $27 million worth of bilberry supplements 2011 according to Nutrition Business Journal.
"Consumers can be easily fooled when buying bilberry supplements," said Tod Cooperman, M.D., president of "Only a lab report can tell you what's really in the bottle, but, at a minimum, you should check the label for the correct species —Vaccinium myrtillus (fruit) — standardized to 36% anthocyanosides, which is about 100 times more concentrated than raw bilberry." Dr. Cooperman also encourages consumers to compare prices. Among the products that passed'stesting, one could spend up to four times the amount of money to get an equivalent amount of high-quality bilberry extract.'s Bilberry Supplements Review provides test results for nine products — eight selected by and one tested through's Quality Certification Program. Products included in the report are Flora Bilberry Extract, Kroeger Herb Complete Concentrates Bilberry, Life Extension Certified European Bilberry Extract, Nature's Sunshine Bilberry Fruit, Nature's Way Bilberry, Source Naturals Bilberry Extract, Standard Process Medi Herb Bilberry 6000 mg, Whole Foods Standardized Bilberry, and Yerba Prima Bilberry Extra Strength. In addition to test results, the report reviews the scientific evidence for bilberry use, dosage, and potential side effects.              

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