Sustanum 350 is a testosterone blend consisting on a mix of propionate, phenylpropionate, cypionate and decanoate esters. Because of the mix of different esters, Sustanum 350 has improved pharmacokinetics with the fast action of propionates and the prolonged action of longer cypionate 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 injected intramuscularly are absorbed slowly from the lipid phase; thus Sustanum 350 can be given at intervals of two to four weeks.

Dosage: The usual dosage for male athletes is 350-700mg per week taken in cycles of 6-12 weeks in lenght. Sustanum is not recommended for women.

50mg Testosterone Propionate
50mg Testosterone Phenylpropionate
100mg Testosterone Cypionate
150mg Testosterone Decanoate

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