The number in the name is the strength. Testopin-100 carries 100 mg of testosterone propionate per millilitre, presented by BM Pharmaceuticals in a carton of ten 1 ml ampoules. The Indian producer runs the same -pin naming across its testosterone line, with the figure after the dash always marking concentration.
Testosterone is the primary male androgen and the reference compound against which every other anabolic-androgenic steroid is measured. Esterified with propionic acid it becomes oil-soluble and forms a depot at the injection site, though only a brief one - this is a fast-clearing form, not a weekly one.
