it took me a month to figure this out! i was on pct with major shut down from mega-trn and my boys just wouldnt come out of hiding, i was also taking 1 lipodrene a day. as soon as i stopped lipodrene my boys came back! but i thought my pct was just finally doing its job, although my libido was still in the trash from trn. but today i just took 1 lipodrene again after a 2 week break and my boys left again, im guessing its the 100mg caffeine.