Description
What is Testosterone Suspension?
Testosterone Suspension (Unesterified aqueous testosterone suspension (injectable)) is pure testosterone — C₁₉H₂₈O₂, MW 288.4 — without any ester modification, suspended in aqueous vehicle. Unesterified testosterone has the fastest onset of any injectable testosterone form (peak ~2–4h, active ~24–48h). Directly available for immediate AR activation without ester hydrolysis step. Fully aromatises to oestradiol via CYP19A1.






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