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Gout medicines: interactions and safety

Prepared 2026-10-29 · Read as Markdown

An interaction check needs the whole medicine list: prescriptions, over-the-counter pain relief, vitamins, herbs, homeopathic products, recent antibiotics, and occasional treatments. Exact products and doses, kidney function, and liver function all matter. This page highlights questions to raise; it cannot clear a combination as safe for you. [S09] [S10] [S20]

Important examples to have checked

Medicine Why a review matters
Allopurinol Azathioprine and mercaptopurine need specialist handling; other drugs can affect rash or toxicity risk.
Febuxostat US labeling contraindicates use with azathioprine or mercaptopurine.
Colchicine Certain CYP3A4 and P-glycoprotein inhibitors can cause dangerous accumulation, especially with kidney or liver impairment.
Probenecid It changes clearance of several drugs, including methotrexate; salicylates can oppose its urate-removing effect.
Pegloticase The specialist regimen includes specific directions for oral ULT and methotrexate co-treatment.

These examples are not a complete interaction database. S09 S10 S11 S12 S13

Keep the reason for other medicines in view

Diuretics can affect urate, but may be treating an important condition. ACR conditionally supports switching hydrochlorothiazide or choosing losartan when feasible, while advising against stopping indicated low-dose aspirin. Do not discontinue heart or transplant medicines because they appear on a gout-risk list. S02

Bring the supplement container

Natural products can contain active substances, interact with prescriptions, and vary in ingredients. A package or exact ingredient list helps a pharmacist assess what you are actually using. S20

A new rash while taking allopurinol means stopping it and seeking prompt medical advice. Severe skin symptoms, breathing difficulty, swelling, or severe illness need emergency assessment. A possible colchicine overdose needs immediate help even before symptoms develop. S09 S10

Have new prescriptions and changes checked rather than assuming a previous interaction review still covers them.

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