Pre-existing CV risk factors or disease e.g. fluid retention, CHF, hypertension. History of GI disease (bleeding or ulcers). Other forms of asthma. Hepatic impairment; closely monitor patients with any abnormal LFT. Renal impairment. Elderly. Lactation.
Animal reproduction studies have shown an adverse effect on the fetus and there are no adequate and well-controlled studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks
Mode of Action
Naproxen, a propionic acid derivative, is a prototypical NSAID. It reversibly inhibits the cyclooxygenase-1 and -2 (COX-1 and -2) enzymes, thus resulting in reduced synthesis of prostaglandin precursors. It can inhibit platelet aggregation, has anti-inflammatory, analgesic and antipyretic actions.
Interaction
May enhance methotrexate toxicity. Reduced BP response to ACE inhibitors or angiotensin II receptor antagonists. Increased risk of serious GI events (e.g. ulcer) w/ aspirin. Increased risk of GI bleeding w/ warfarin. May reduce the natriuretic effects of furosemide or thiazide diuretics. May increase serum lithium concentrations and reduce renal lithium clearance. Delayed absorption w/ antacids, colestyramine or sucralfate. May interfere w/ the antihypertensive effects of ?-blockers (e.g. propranolol). May increase serum levels w/ probenecid.
Pregnancy Category Note
Pregnancy category: C; D in 3rd trimester or near delivery.
Adult Dose
Topica
Adult: Apply Naproxen gel 2-6 times a day as required.
Child Dose
N/A
Renal Dose
N/A
Administration
N/A
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