Compound Library

Testosterone / Transdermal

Testosterone Gel (AndroGel)

Topical testosterone gel for daily application. Steady delivery without injections. Significant transfer risk to partners and children — hands must be washed, application site covered. Less efficient than injectable — absorption variable.

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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 dose25–100mg applied to shoulders/upper arms daily.
Half-life4 hours
Risk flaglow
Regulatory noteFDA-approved context noted

Side effects and watch-outs

  • Skin reaction at application site
  • Transfer risk to women/children
  • Variable absorption
  • Acne
  • Elevated E2
  • Suppression
  • Polycythemia