Contraindications: Trenbolone Enanthate is contraindicated in individuals with known hypersensitivity to Trenbolone or any oil-based injectable excipient (benzyl benzoate, benzyl alcohol, sesame oil). Contraindicated in users with diagnosed prostate carcinoma, breast carcinoma in males, polycythaemia, or severe untreated hypertension. Not indicated for women due to strong virilisation potential. Pre-existing cardiac insufficiency or hepatic dysfunction warrants exclusion from use.
Side Effects: Androgenic effects include acne, accelerated scalp hair recession in genetically predisposed individuals, and skin oiliness. Progestogenic activity may elevate prolactin independent of oestrogen, causing lactotroph-mediated side effects. Cardiovascular effects include HDL suppression, LDL elevation, and erythropoiesis stimulation with resultant haematocrit rise — particularly pronounced in older users with already-reduced cardiovascular reserve. Night sweats and elevated body temperature are commonly reported at higher doses.
Monitoring: Mandatory bloodwork schedule: pre-cycle baseline, week 6 on-cycle (prolactin, haematocrit, lipids), and post-cycle at PCT initiation. Blood pressure should be self-monitored weekly. Hepatic enzyme elevation, while less common with injectable than oral androgens, warrants investigation if ALT/AST rise more than 2× baseline. Cardiac function screening (echocardiogram) is advisable for users over 45 initiating their first Trenbolone cycle.
PCT: Given the long ester clearance window of Trenbolone Enanthate, post-cycle therapy with a selective oestrogen receptor modulator (e.g. Tamoxifen 20 mg/day or Clomiphene 50 mg/day) should commence no earlier than 14 days after the last injection to allow adequate plasma clearance. Users running Trenbolone alongside suppressive testosterone compounds should plan a structured 4–6 week PCT phase; prolactin should be re-tested at PCT week 2 to confirm normalisation.