Methylnaltrexone is a peripherally acting μ-opioid receptor antagonist that relieves opioid-induced constipation without affecting central analgesia. It works by blocking opioid receptors in the gastrointestinal tract while preserving pain control.

Methylnaltrexone API is manufactured and supplied by Artis Biotech | ASTANDARDS, ensuring high purity, consistent quality, and regulatory-compliant specifications. Our APIs are produced using validated processes and are suitable for research, development, and pharmaceutical manufacturing applications.