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👤 Adult👶 Paediatric

Methylthioninium Chloride

Clinically reviewed by MedNext Clinical Team. Last reviewed 1 January 2026. See our editorial policy and correction policy.

4 known interactions
2 brand names

Indications

  • Drug- or chemical-induced methaemoglobinaemia
  • Aniline- or dapsone-induced methaemoglobinaemia

Drug Interactions

Moderate interactions

4 drug interactions identified for Methylthioninium Chloride. Check the full interaction details, severity ratings, and clinical recommendations in the MedNext app.

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Safety Information

🤰Pregnancy guidance available
🤱Breastfeeding guidance available
🫘Renal impairment guidance
⚠️Requires renal dose adjustment

Cautions

chloride Children under 3 months (more susceptible to methaemoglobinaemia from high doses of methylthioninium); chlorate poisoning (reduces efficacy of methylthioninium); G6PD deficiency (seek advice

Side Effects

chloride Common or very common Abdominal pain; anxiety; chest pain; dizziness; headache; hyperhidrosis; nausea; pain in extremity; paraesthesia; skin ...

Full safety information, contraindications, and dosing available in the MedNext app.

Brand Names

Methylene Blue(IN, PK, SA, AE, EG, ZA, NG)Provayblue(IN)
Mn

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Source: MedNext Audited Proprietary Dataset

Last reviewed: 2026

Reviewer: MedNext Clinical Team

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Medical Disclaimer: This information is for educational purposes only and is not a substitute for professional medical advice. Always consult a qualified healthcare professional before making clinical decisions. Verify all drug information with current clinical guidelines.

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