Zyvex Pharmaceuticals Sustanon 250 Test Blend in a 10 ml Vial

Zyvex Pharmaceuticals Sustanon 250 Test Blend 250 mg/ml

Zyvex Pharmaceuticals Sustanon 250 is a multi-ester testosterone blend at 250 mg/ml in a 10 ml multi-dose vial. The standard profile carries 30 mg of propionate, 60 mg of phenylpropionate, 60 mg of isocaproate and 100 mg of decanoate in every millilitre, so one injection covers a fast front and a slow tail. It is the single-vial answer for a user who wants testosterone from one product instead of a drawer of separate esters.

• 250 mg/ml blend, 10 ml multi-dose vial
• Four esters from fast propionate to long decanoate
• GMP-manufactured and HPLC-verified, COA per batch
• international shipping with a 4 to 10 day transit window

How the Four-Ester Blend Works

The propionate fraction is released first and the decanoate fraction is still leaving the depot days later, so blood levels rise sooner after the first shot than they would with a single long ester. Published data give propionate an elimination half-life of roughly 0.8 days and a terminal half-life of about 5.6 days for decanoate measured in blood after a four-ester injection; the checked sources carry no half-life figure for phenylpropionate or isocaproate, so none is quoted here. Because it is still plain testosterone, an aromatase inhibitor such as Arimidex is used only if bloodwork shows estradiol climbing.

Dosage & Administration

Community protocols inject the blend once or twice a week, most often every second or third day to keep the short ester from spiking. No medical dosing exists for bodybuilding use, so figures are conventions rather than instructions. Sustanon is a popular base beside a slower compound such as the Zyvex Deca & NPP line, and it is also the simpler alternative to keeping three separate vials from the Zyvex Testosterone ester line. Whatever the length of the block, recovery on Nolvadex or Clomid is planned before the first injection.

Quality & Authenticity

Each batch is produced under GMP conditions and tested by third-party HPLC, with the Certificate of Analysis held for the batch. Store the vial upright at room temperature, away from light, heat and moisture, and do not refrigerate or freeze it, because cold oil thickens and can crash the esters out of solution.

For laboratory research only. Consult a healthcare professional before use.