I used SRC Trip about 2 years ago at the end of a 8week Havoc/Fura/dermacrine cycle. It is sold as a single dose bottle. Took the whole 100mcg shot first day of pct. I also had torem and other supps to help with pct which I started the next day. Epi/havoc smashed my libido, after taking Trip I felt a big increase in libido the following days, but as stated I was also taking torem. After a week this dropped off or i guess normalized. Why this happened I don't know. Over all it was a good Pct but I have had good Pcts without Trip. I realistically can't say it made a difference or not. My feeling about it now is, if it was that amazing of a product everyone would be using it just like time tested serms. The fact that Trip is used for castration in high extended doses should have deterred me. I won't use again unless I see some more studies conducted with blood work (which I do not have). Pct sucks but go with what works, serms. I really feel Pcts are more mental than anything.