contraindications: Contraindicated in individuals with known or suspected androgen-sensitive malignancies, including prostate and breast carcinoma.
Not for use in women who are pregnant or may become pregnant — testosterone is teratogenic (Pregnancy Category X).
Contraindicated in patients with hypersensitivity to arachis oil (peanut oil) or benzyl alcohol.
Individuals with severe hepatic impairment, nephrotic syndrome, or untreated polycythaemia should not use this preparation.
side_effects: Aromatisation of testosterone to oestradiol may cause gynaecomastia, water retention, and elevated blood pressure — monitored via serum oestradiol assay.
Androgenic side effects including accelerated androgenetic alopecia and acne are dose-dependent and individual to genetic predisposition.
Erythrocytosis (elevated haematocrit) is associated with long-term exogenous testosterone use; haematocrit above 54% warrants dose reduction.
Injection-site reactions (oil embolism risk if inadvertently administered IV) — strict IM technique is mandatory.
monitoring: Serum total testosterone, LH, FSH, and oestradiol should be measured at baseline and at 6–8 weeks into any protocol.
Full blood count (FBC) including haematocrit; lipid panel (HDL suppression is common with exogenous androgens); PSA in males over 40.
Liver function tests (LFTs) are advisable for protocols extending beyond 12 weeks.
Blood pressure monitoring at each injection visit — AAS-related hypertension is linked to volume expansion from sodium retention.
pct: Post-cycle therapy (PCT) should commence approximately 3 weeks after the last Sustanon 250 injection, accounting for the decanoate ester's extended half-life (~15 days).
SERM therapy with tamoxifen (Nolvadex) 20–40 mg/day or clomiphene citrate 50 mg/day for 4–6 weeks is the standard PCT framework.
HCG (250–500 IU, 2–3x per week) administered during the final 2–3 weeks of the cycle can preserve testicular volume prior to SERM-based recovery.
Endogenous testosterone recovery timelines vary; bloodwork at 8–12 weeks post-PCT is recommended to confirm HPG axis restoration.