Sustanon 250 Testosterone Blend for Multi-Ester TRT — Anabolic Steroids
Four-ester testosterone blend providing both rapid onset and sustained release in a single injection.
Overview
Sustanon 250 is a blend of four testosterone esters designed to provide both immediate and sustained testosterone release from a single injection. Developed by Organon, it contains: Testosterone Propionate (30mg), Testosterone Phenylpropionate (60mg), Testosterone Isocaproate (60mg), and Testosterone Decanoate (100mg), totaling 250mg of testosterone esters per mL. The rationale is that the shorter esters (propionate, phenylpropionate) provide rapid onset within 24-48 hours, while the longer esters (isocaproate, decanoate) sustain levels for 2-3 weeks. Sustanon is the most prescribed TRT formulation in the UK and Europe, though less common in the US where single-ester formulations dominate. It is typically administered every 2-3 weeks for TRT, though many clinicians now prefer weekly injection for more stable levels.
Indications
- Hypogonadism requiring rapid onset and sustained testosterone delivery
- TRT in regions where Sustanon is the standard formulation (UK, Europe, Australia)
- Testosterone deficiency with preference for multi-ester pharmacokinetics
- Delayed puberty
- Gender-affirming hormone therapy
- Androgen deficiency with infrequent injection preference
Mechanism of Action
Testosterone deficiency where both rapid symptom relief and sustained hormone levels are desired
Dosing
| Compound | Dose | Frequency | Notes |
|---|---|---|---|
| Sustanon 250 | 250 mg (1 mL) | Every 2-3 weeks | Standard TRT dosing; provides rapid onset and sustained release |
| Sustanon 250 | 125 mg (0.5 mL) | Weekly | More stable blood levels with reduced peak-trough variation |
| Sustanon 250 | 250 mg (1 mL) | Weekly | Weekly dosing for enhanced optimization; higher than standard TRT |
Evidence Grade
GRADE B
Safety & Contraindications
- Schedule III controlled substance
- Contains four different esters - more complex pharmacokinetics
- Arachis (peanut) oil vehicle - contraindicated in peanut allergy
- Monitor hematocrit for polycythemia
- Multiple esters may cause more injection site reactions
- Aromatizes to estradiol - monitor estrogen levels
- Suppresses spermatogenesis and natural testosterone
- Monitor PSA in men over 40
- Contains benzyl alcohol - not suitable for neonates