standardized extract question

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    standardized extract question


    When a certain herbal extract is standardized around one active, the bottle may read like

    Resveratrol 50% 500mg

    or

    Icariin (50%) 200mg



    does that mean in those examples, the resveratrol content is 250mg and icariin is 100mg ? The rest of the weight being other parts of the source of the active (say maybe grape skins or HGW in those examples).





    if that is correct, I get more confused when looking at something like eGCG

    from NOW

    Green Tea Extract (Camellia sinensis) (Leaf) 400mg **
    Standardized Extract) (Contains 4 mg of Caffeine)

    min. 98% Total Polyphenols, 80% Total Catechins, and 50% EGCg



    What do those percentages mean, clearly it doesn't have 228% of actives in it...

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    Correct.

    For Green Tea, it is standardized for 98% Total Polyphenols, 80% of these polyphenols are Catechins, and 50% of the Catechins are EGCG.
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    Thanks dsade! Makes sense.


    poison also gave me an explanation on an unrelated forum.
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    Quote Originally Posted by johnyq View Post
    Thanks dsade! Makes sense.


    poison also gave me an explanation on an unrelated forum.
    Poison definitely knows his stuff.
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    BPS - Where Body meets Performance
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