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A Phase 2 Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Efficacy of a Single Dose of Intravenous CS 1103 Following a Single Intravenous Dose of Fentanyl in Healthy Subjects With Naloxone Blockade

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Trial Profile

A Phase 2 Randomized, Double-Blind, Placebo-Controlled Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Efficacy of a Single Dose of Intravenous CS 1103 Following a Single Intravenous Dose of Fentanyl in Healthy Subjects With Naloxone Blockade

Status: Not yet recruiting
Phase of Trial: Phase II

Latest Information Update: 13 Apr 2026

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At a glance

  • Drugs CS 1103 (Primary) ; Fentanyl (Primary) ; Naloxone (Primary)
  • Indications Substance-related disorders
  • Focus Adverse reactions; Pharmacokinetics
  • Sponsors Clear Scientific

Most Recent Events

  • 12 Mar 2026 New trial record

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