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I'm surprised you got that effect from tribulus tbh :/ Unless you're in your 40s in which case it is quite plausible. Trib needs to be high in protodioscin otherwise it isn't effective and there are so many different types of trib out there. Some reasearch seems to suggest that not only does the Tribulus need to be Bulgarian but the part of the plant is also crucial, fruit and roots are no good it needs to be from the leaf.
Interesting post! My training partner and I went halves on a bottle from MP on sale. The effects are similar with both of us but i seem to feel more of an effect. We're both 20 and male. 300mg a day, 95% saponins