Synflex (naproxen sodium) 550 mg tablets

Description

💊 Prescription long-acting NSAID for pain and inflammation.

▪︎ Naproxen sodium 550 mg tablets, equivalent to 500 mg naproxen; taken twice daily

▪︎ In Italy 550 mg is prescription-only (Synflex); the over-the-counter naproxen there is Momendol 220 mg

🔬 How it works: pharmacologically naproxen is an ordinary non-selective NSAID — its distinction is not the mechanism but the clock. Its half-life is markedly longer than that of the others in this group, so one tablet covers about twelve hours and the day needs two doses rather than three or four. For pain that lasts days that changes more than a decimal place on any strength table. 📊 Evidence: in the Cochrane single-dose review naproxen 500/550 mg gave an NNT of 2.7 (95% CI 2.3-3.2) — mid-table among the five. But that metric is computed over six hours after a single dose, so it cannot see duration of action at all. Naproxen looks average in it precisely because the thing it does best falls outside the measurement.

⚠️ Prescription-only at this strength, chosen by a physician. Class cautions apply in full: stomach, kidneys, blood pressure, heart. A common mistake is to take a 550 mg tablet on top of an over-the-counter 220 mg one — that is the same drug twice. Never combine with another NSAID. If pain outlasts the pack, that is a reason to see a doctor rather than buy another box.

📦 Ordered on request via chat — availability and delivery are confirmed by the administrator. Full guide: /en/blog/naproxen-long-acting-relief-in-acute-pain