Compound Library

Testosterone / Transdermal

Testosterone Topical Gel (Testim)

Hydroalcoholic testosterone gel 1%. Apply to upper arms/shoulders. FDA-approved TRT. Similar to AndroGel with slightly different excipients.

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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 dose50–100 mg/day topically (varies by product)
Half-life24 hours
Risk flaglow
Regulatory noteFDA-approved context noted

Side effects and watch-outs

  • Transfer risk to others (apply and allow to dry, cover site)
  • Skin irritation
  • Variable absorption
  • HPTA suppression
  • Oestrogen elevation
  • Lower systemic levels than injections