Compound Library

Testosterone / Transdermal

AndroGel (Testosterone 1.62%)

FDA-approved testosterone gel. Apply to shoulders/upper arms. Convenient once-daily. Variable absorption between individuals.

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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 dose40.5–81 mg/day (2.5–5 pump presses)
Half-life24 hours
Risk flaglow
Regulatory noteFDA-approved context noted

Side effects and watch-outs

  • ⚠️ Transfer risk — avoid skin-to-skin contact with partners/children after application
  • Skin irritation at application site
  • Variable absorption (30–50% lower than injections)
  • HPTA suppression
  • Oestrogen elevation
  • Haematocrit elevation with long-term use