Testosterone Cypionate / Testosterone Propionate Injection (Grapeseed Oil), 160/40 mg/mL 5 mL

Testosterone Cypionate / Testosterone Propionate Injection (Grapeseed Oil) 160 mg / 40 mg per mL – 5 mL Vial is a compounded dual-ester testosterone formulation designed to provide both rapid onset and sustained release of testosterone for clinical or investigational use in androgen replacement therapy. Testosterone Cypionate (160 mg/mL) – A long-acting ester that provides stable, sustained testosterone levels over several days due to its slower release from the injection site. Testosterone Propionate (40 mg/mL) – A short-acting ester that delivers a faster onset of action, helping achieve more immediate increases in serum testosterone. The combination allows for a balanced pharmacokinetic profile, with both quick elevation and prolonged maintenance of testosterone levels. The grapeseed oil carrier is commonly used for its favorable viscosity and tolerability in intramuscular injections. A 5 mL vial contains a total of 1000 mg testosterone cypionate and 200 mg testosterone propionate. Testosterone esters function by releasing free testosterone into circulation, where it binds androgen receptors to support muscle mass, bone density, red blood cell production, libido, and overall metabolic function. Pharmacokinetics of testosterone esters: https://pubmed.ncbi.nlm.nih.gov/20385945/ Testosterone therapy in hypogonadism: https://pubmed.ncbi.nlm.nih.gov/29931099/