Last reviewed · How we verify

AC-203

TWi Biotechnology, Inc. · Phase 2 active Small molecule

AC-203 is a selective agonist of the kappa opioid receptor.

AC-203 is a selective agonist of the kappa opioid receptor. Used for Chronic pain.

At a glance

Generic nameAC-203
SponsorTWi Biotechnology, Inc.
Drug classkappa opioid receptor agonist
Targetkappa opioid receptor
ModalitySmall molecule
Therapeutic areaPain
PhasePhase 2

Mechanism of action

Activation of the kappa opioid receptor is thought to produce analgesia with a lower risk of respiratory depression compared to mu opioid receptor agonists. AC-203 has been investigated for its potential to treat pain in various conditions.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results