Prohormones and 1-test can produce bad sides if you are not careful. When prohormones are used the doses used must be so high that the sides outweigh the benefit.
Best one out there IMO is 1-AD by ergo but then again you have to use 900 milligrams a day! Also, let me tell you, some of the prohormones and 1-test shut you down hard.
See the supplement section for peoples feedback.