General information:

This is a testosterone injection consisting of a mix of propionate, phenylpropionate, isocaproate, and decanoate esters. Becaus of the mix of different esters, Susten has improved pharmacokinetics with the fast action of propionates and the prolonged action of longer isocaproate and decanoate esters, thus providing a more stable concentration of testosterone in the blood over a longer period of time.

Esterification of the 17-beta-hydroxy group by different esters can prolong of action of testosterone, because testosterone esters are less polar than free testosterone . Testosterone esters in oil injicted intramuscularly are absorbed slowly from the lipid phase.

Effective dose: 250 – 1000 mg / week

Active half-life: 7 days

Stroage: Store in a dry place, protected from direct light between 10-25 °C. Warning and rotating the vial between the palms of the hands will redissolve any crystals that may have formed during storage at low temperatures