Testosterone / Long Ester

Testosterone Cypionate

Most prescribed TRT testosterone in the USA. Virtually identical to Enanthate — slightly longer half-life. FDA-approved for hypogonadism. Often dosed once weekly for TRT convenience.

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Educational reference only. This page does not diagnose, prescribe, or replace care from a licensed professional. Laws, availability, and clinical appropriateness vary by location.

Reference doseTRT: 100–200 mg/week. Performance: 300–600 mg/week

Half-life192 hours

Risk flagmoderate

Regulatory noteFDA-approved context noted

Side effects and watch-outs

Same side effect profile as Testosterone Enanthate
Oestrogen elevation requiring AI management
Haematocrit elevation
Testicular atrophy and fertility suppression
Acne/oily skin
Hair loss
LDL/HDL changes
Cardiovascular risk at supraphysiological doses
Regular bloodwork required