9/15 Berberine Supps (Names Included) on the US Market Contain More/Less Berberine Than the Label Says - Fraud?
Berberine is a yellow-colored alkaloid compound found in several different plants, including European barberry, goldenseal, goldthread, Oregon grape, Phellodendron, and tree turmeric. Eventually, neither of the two insights from a recent paper in the Journal of Dietary Supplements can really surprise you: the majority of berberine supplements doesn't contain the amount of active ingredient that's on the label - 60% fail to land within the allowable margin of +/-10% and the more expensive "quality brands" are not better than the cheap ones, even if they had label claims of manufacturing under Good Manufacturing Practice (GMP) conditions in Food and Drug Administration inspected facilities, and guarantees purity and potency! In the real world, theory and practice, or, rather, labelled and real berberine content seem to diverge... When timing matters, for berberine it's not well-researched, but... Caffeine - 45 Min B4 Workouts? Nutrient Timing for Gain...