In order to claim an increase in testosterone levels, you need to take tests for it before and after taking this dietary supplement. I didn't do it. However, overall well-being improves unequivocally, there seems to be more energy. Significantly increased libido. I tried other dietary supplements with maca and tribulus, there was no such effect. It makes you think that some manufacturers are pushing a dummy . This one definitely works. According to reviews, I think it is quite comparable with pharmacy tribxtan.
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