Apply to trial NCT07459166

A few quick questions so the study team can decide if you might be a fit.

RecruitingPhase 2Drug trial

A Phase 2 Safety, Tolerability, PK, and Efficacy Study of CS-1103 Following Fentanyl Challenge With Naloxone Blockade

The purpose of the study is to evaluate the safety, tolerability, pharmacokinetics, and efficacy of CS-1103 (1,000 mg), given by intravenous (IV) infusion in healthy participants in the presence of a clinically relevant dose of fentanyl (200 μg, IV), with naloxone blockade (400 μg, IV).

How this works

  1. Answer a few questions

    About 5 to 10 minutes. Skip-friendly where possible.

  2. We forward your profile to the study team

    We send your contact details and a short fit summary to the official trial contacts, with you copied.

  3. The team reaches out to schedule screening

    Usually within a few business days, via the contact you give.

We save your progress under this email and copy you when we send your application to the study team.

By clicking Start, you agree to our terms of service, including sharing your contact details and fit summary with official trial contacts if you submit.