that is why studies on herbs that show any effectiveness are trademarks by companies. not just business, but companies make their own extracts (not generics from China) and then test them for efficiency and put them on trial in studies. lots of trademarked various herbal extracts out there that come from US and Europe, and China produces the rest, generic herb powders, formulas usually sold at cheaper price by manufactures like swanson, nature made and all those brands in wal-mart and walgreens.
now i know people will find this dubious and dont wanna spend the extra money on what they deem to be the same herbal extract, but you can experiment yourself just once go the extra mile here and buy generic turmeric extracts and brand name trademarks and see the difference. tho, thats not the best example as turmeric doesnt really have any clear noticeable effect, try something stimulative perhaps, like rhodiola or green tea extract. compare the two, basic extracts vs trademarked brand. i know ive noticed some differences, but who am i to be trusted, im the bad boy of the forum :S
Edited by normalizing, 29 August 2016 - 04:49 PM.