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Inactive
Last updated: May 18, 2026

TU + NET-EN

Testosterone Undecanoate (TU) + Norethisterone Enanthate (NET-EN)

  • User: Male
  • Hormonal: Hormonal
  • Delivery type:
    • Injectable
  • Intended Duration:
    • Short-Acting
  • Development Stage: Phase II
  • Developer(s)/researcher(s): Bayer, CONRAD, WHO
Details
  • API: Testosterone Undecanoate, Norethisterone Enanthate
  • Target: Progesterone Receptor, Androgen Receptor
  • Mechanism of Action:
    • Reduced Sperm Production
  • Inactive Materials: Undetermined
  • Regimen: 1 Injection/8 Weeks
  • MPT: Not Potential MPT
Product Status

Development ended after WHO trial halt

History

See linked literature below for information on safety and biocompatibility

A global Phase IIb clinical trial was discontinued in April 2011 after a WHO review panel determined that AEs -largely concerningly-high prevalence of mild-to-moderate mood disorders- would outweigh the potential benefits to male participants.

Publications