Compound Library

Testosterone / Very Long Ester

Testosterone Decanoate

Longest ester testosterone. Very slow release — Sustanon and Neotest component. Can cause uneven peaks if used standalone. Long clearance time.

Build protocol outline Open dose calculator TNHL ebooks
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 doseAs part of blend; standalone: 200–400 mg every 2–3 weeks
Half-life336 hours
Risk flagmoderate
Regulatory noteFDA-approved context noted

Side effects and watch-outs

  • All standard testosterone effects
  • Prolonged oestrogen management required
  • Long clearance — difficult to adjust
  • Haematocrit elevation
  • HPTA suppression