1-test. I used Mike's 1-test in Avant gel.
I got some good vascularity and good pumps.
I had to quit taking it after 2 weeks. I had really bad side effects, mostly related to my prostate. (I was pissing my pants. This may or may not happen to you).
Didn't lose any hair, but I take a lot of supps for that.
Made my chest and facial hair grow faster. 1 day of not shaving looked like 1 week!
Made my bones hurt.
Made me very tired. made me feel like a total pussy and completely killed my natural aggression.
My balls atrophied, but they came back right away. Good balls
One guy (JBRIII ?) on the supplements board is permanently shut down from 1-test. He's now on HRT. I am thankful that this did not happen to me.
Read up on var, primo, and test (beware of fakes, esp. fake primo!). Medical grade stuff. Tried and true. Side effects are known and documented.
I still have a lot of 1-test leftover, however...