Naxii (Naproxen Sodium)

• Naproxen sodium is used to manage pain and inflammation associated with several musculoskeletal and febrile conditions.
• Acute pain: Provides relief of mild to moderate pain such as dental or postoperative discomfort.
• Arthritic inflammation: Reduces swelling and pain in osteoarthritis and rheumatoid arthritis.
• Musculoskeletal injuries: Alleviates pain and inflammation from sprains, strains, and back pain.
• Fever: Lowers elevated body temperature in febrile states.

• Naproxen sodium exerts its effect by non‑selectively inhibiting cyclooxygenase‑1 (COX‑1) and cyclooxygenase‑2 (COX‑2) enzymes, which blocks the conversion of arachidonic acid to prostaglandins. The reduction in prostaglandin synthesis diminishes peripheral sensitization of nociceptors, decreases inflammatory exudate formation, and lowers the hypothalamic set‑point for temperature, thereby providing analgesic, anti‑inflammatory, and antipyretic actions.

Naproxen sodium may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Gastro‑intestinal discomfort: nausea, dyspepsia, or abdominal pain.
• Headache: mild to moderate intensity.
• Dizziness or vertigo.
• Mild rash or itching.

Serious or Rare Side Effects

• Gastro‑intestinal bleeding or ulceration.
• Severe cardiovascular events such as myocardial infarction or stroke.
• Acute renal failure or significant decline in kidney function.
• Life‑threatening skin reactions (e.g., Stevens‑Johnson syndrome, toxic epidermal necrolysis).

• When prescribing naproxen sodium, clinicians should consider several safety precautions to minimize risk.
• Assess gastrointestinal risk: evaluate history of ulcers, bleeding, or chronic NSAID use.
• Evaluate cardiovascular profile: avoid in patients with uncontrolled hypertension or recent thrombotic events.
• Monitor renal function: check baseline creatinine and adjust in renal impairment.
• Use lowest effective dose for the shortest duration necessary.
• Avoid concomitant use with other NSAIDs, anticoagulants, or corticosteroids unless medically justified.
• Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Naproxen sodium can interact with other medicines, altering efficacy or safety.

Major Interactions (Avoid)

• Anticoagulants (e.g., warfarin, direct oral anticoagulants): increased risk of serious bleeding.
• Other NSAIDs or aspirin: additive gastrointestinal toxicity.
• Selective serotonin reuptake inhibitors (SSRIs) or serotonin‑norepinephrine reuptake inhibitors (SNRIs): heightened bleeding risk.

Moderate Interactions (Monitor Closely)

• Angiotensin‑converting enzyme inhibitors or angiotensin‑II receptor blockers: may reduce antihypertensive effect and impair renal function.
• Diuretics (especially loop diuretics): potential for reduced renal perfusion.
• Methotrexate: naproxen may decrease clearance, raising toxicity risk.