Nalgesin Relief (Naproxen Sodium)

Naproxen sodium works across several pain‑related and inflammatory conditions, providing relief by reducing prostaglandin‑mediated responses.

• Mild to moderate pain: provides analgesic relief for everyday aches and injuries.
• Musculoskeletal pain: eases discomfort from strains, sprains, and overuse injuries.
• Osteoarthritis: helps reduce joint pain and stiffness associated with degenerative cartilage loss.
• Rheumatoid arthritis: diminishes inflammatory joint pain and swelling.
• Dysmenorrhea: alleviates menstrual cramps and associated pelvic pain.
• Fever: lowers elevated body temperature caused by infection or inflammation.

• Naproxen sodium exerts its effect by non‑selectively inhibiting cyclooxygenase‑1 (COX‑1) and cyclooxygenase‑2 (COX‑2) enzymes. This inhibition blocks the conversion of arachidonic acid to prostaglandins, which are key mediators of inflammation, pain, and fever. By reducing prostaglandin synthesis, the drug diminishes peripheral sensitization and the inflammatory response, resulting in analgesic, anti‑inflammatory, and antipyretic actions.

Adverse reactions may range from mild to severe and should be monitored during therapy.

Common Side Effects

• Gastrointestinal upset (nausea, dyspepsia)
• Headache
• Dizziness
• Mild skin rash
• Elevated blood pressure
• Fluid retention or edema

Serious or Rare Side Effects

• Peptic ulcer disease or gastrointestinal bleeding
• Severe renal impairment or acute kidney injury
• Hepatotoxicity (liver enzyme elevation)
• Cardiovascular events such as myocardial infarction or stroke
• Anaphylactic or severe hypersensitivity reactions
• Blood dyscrasias (e.g., thrombocytopenia)

Before initiating therapy, consider the following safety measures.

• Assess gastrointestinal risk: evaluate history of ulcers or bleeding.
• Monitor renal function: check creatinine and urine output in at‑risk patients.
• Avoid in known hypersensitivity: discontinue if allergic reactions occur.
• Use caution with cardiovascular disease: weigh benefits against thrombotic risk.
• Avoid concomitant use with anticoagulants unless directed: monitor coagulation parameters.
• Store at room temperature: keep in the original pack, protect from moisture.

Naproxen sodium can alter the activity of several other medicines; interaction severity varies.

Major Interactions (Avoid)

• Anticoagulants (e.g., warfarin): increased bleeding risk.
• Other NSAIDs or aspirin: heightened gastrointestinal toxicity.
• Corticosteroids: additive ulcerogenic effect.
• Lithium: elevated lithium serum levels.

Moderate Interactions (Monitor Closely)

• Diuretics: possible reduction in antihypertensive effect.
• ACE inhibitors or ARBs: may impair renal function.
• Methotrexate: decreased clearance leading to toxicity.
• SSRIs or SNRIs: modest increase in bleeding tendency.