Vyo-Tech Supp. Question

I’ve always used and praised Alpha Male. One of my friends uses Vyo-Tech’s
17-HD and Viraloid. Anyone of heard of these two supps?? I told him to try some Biotest Products.

Heard of them both, never tried either one. Been doing some research on 17-HD though, and alot of people seem to like it but get a tolerance to it. Seems pretty safe, you can take it without breaks(although you might as well so you don’t build a tolerance) and no post cycle therapy.

Been thinking to trying 17-HD just haven’t gotten myself to pay the money for it considering it seems to just amp you up before a workout and not build muscle.