Description
This Vital Research undecanoate at 60 mg provides the slowest-release testosterone in routine clinical use. Injection volume is large — inject slowly to minimise POME (post-injection pulmonary oil microembolism) risk. Clinical TRT rather than athletic cycling.
Key Benefits
- Multi-ester blend — acute kick + long-tail coverage from one injection
- Classic Sustanon / Omnadren formulation (prop + phenyl + iso + deca)
- Twice-weekly pinning schedule covers all four ester kinetics
- Behaves functionally like testosterone enanthate for cycle planning
- Popular pharma-grade option where single-ester vials aren’t available
- Each unit dosed at 60 mg — see Recommended Dosage below for protocol-specific intake
Recommended Dosage
Research dosing: 250–750 mg/week; TRT 100–200 mg/week. Split across at least 2 injections (Mon/Thu). Shorter esters in the blend push injection frequency — once-weekly produces noticeable troughs.
How It Works
Mixture of 4 testosterone esters: propionate (fast), phenylpropionate (short-medium), isocaproate (medium), decanoate (long). At the AR the active hormone is identical across esters; the blend provides staggered release kinetics for smoother coverage.
Pharmacokinetics
Composite release: propionate peaks in ~24 h, phenylpropionate ~2 days, isocaproate ~3–4 days, decanoate ~7–10 days. Net effect similar to enanthate but with a gentler peak. Steady-state in 4 weeks. PCT starts 2 weeks after last injection.
Potential Side Effects
Standard testosterone side-effect profile. Propionate fraction can cause PIP; some users prefer pure enanthate for tolerability. AI dose by bloodwork — hematocrit and E2 at week 6.
Cycle & Stacking Guide
Cycle base identical to enanthate: 12–16 weeks for mass/recomp, paired with secondary compounds per goal. Twice-weekly pinning mandatory. PCT (Clomid + Nolva) 14 days after last pin.
Manufacturer Notes
Vital Research focuses on research compounds and support supplements with batch-specific quality control documentation.
Storage & Handling
Store upright at 15–25 °C in the original box, protected from light and moisture. Oil-based injectables are shelf-stable for the duration printed on the vial when kept at controlled room temperature. Do not refrigerate — cold thickens the carrier oil and makes drawing/injecting harder. Keep out of reach of children. For research and educational purposes only.
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