rofecoxib, Vioxx (cont.)



PREPARATIONS: Tablets: 12.5 mg, 25 mg, and 50mg. Oral Suspension: 12.5 mg/5 mland 25mg/5ml

STORAGE: Store at room temperature, 15-30°C (59-86°F)

PRESCRIBED FOR: Rofecoxib is used for treating the pain, swelling, and tenderness caused by osteoarthritis and rheumatoid arthritis in adults. Rofecoxib is also used for treating acute pain such as headache and menstrual cramps.

DOSING: The lowest effective dose should be used. For the management of osteoarthritis, the usual dose is 12.5 mg (tablet or suspension) once daily. The maximum dose is 25 mg once daily. For the treatment of acute pain and menstrual cramps the usual dose is 50 mg once daily. It may be taken with or without food.

DRUG INTERACTIONS: Concomitant use of rofecoxib with aspirin or other NSAIDs (e.g., ibuprofen, naproxen, etc.) may increase the occurrence of stomach and intestinal ulcers. Since NSAIDs may increase the concentration of lithium in the body, lithium levels should be monitored during and after therapy with rofecoxib.

Rofecoxib may accentuate the effect of the anticoagulant (blood thinner) warfarin (Coumadin), and promote bleeding. Persons taking warfarin should have the clotting of their blood tested, particularly during the first few days after starting or stopping rofecoxib.

Rifampin decreases the concentration of rofecoxib in the body by 50% and thus may reduce the effectiveness of rofecoxib.

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