Colchicine: follow the exact product and directions

More is not better

Directions and repeat-course limits depend on kidney and liver function, other medicines, preventive use, and the product. ACR favors low-dose over high-dose colchicine for an acute flare because it has similar efficacy with fewer adverse effects. Do not keep taking it until diarrhea occurs or take extra because the joint still hurts. S02 S10

Check new prescriptions and interactions

Some medicines interfere with colchicine clearance. Clarithromycin and cyclosporine are important examples; other drugs and grapefruit may also matter. Certain combinations are contraindicated with kidney or liver impairment because life-threatening toxicity can occur. These examples are not a complete interaction list. Ask a pharmacist to check the full regimen, especially when something new is prescribed. S10

Know when to get help

Digestive side effects can occur, but severe or persistent vomiting or diarrhea may raise concern about toxicity. Report muscle weakness and significant adverse effects. A possible overdose needs immediate medical help; do not wait for symptoms. S10

Make the written plan specific

Record the product, strength, exact directions, maximum use, and repeat restrictions. Ask what to do if you already take preventive colchicine. Keep prevention and acute-flare instructions separate, and store the medicine securely away from children. S10

If the instructions are unclear or treatment is not helping, contact your care team rather than calculating an extra dose yourself.

Related pages

• Preparing a personal flare plan
• Medicine interactions and safety
• When joint symptoms need urgent help
• Managing a gout flare

Sources

• S02: 2020 American College of Rheumatology Guideline for the Management of Gout
• S10: DailyMed: Colchicine tablets prescribing information