Ibuprofen vs Naproxen

Both ibuprofen and naproxen provide effective analgesia and anti-inflammatory effects for conditions including headaches, menstrual cramps, dental pain, musculoskeletal injuries, and arthritis ^[1]. Head-to-head studies show comparable pain relief when used at equivalent anti-inflammatory doses. For osteoarthritis and rheumatoid arthritis, naproxen 500 mg twice daily is approximately equivalent to ibuprofen 800 mg three times daily ^[2]. The key efficacy difference is duration of action: naproxen provides 8–12 hours of relief per dose compared to 4–6 hours for ibuprofen, making naproxen more suitable for chronic pain conditions requiring sustained relief ^[3]. For acute pain (headaches, dental procedures), ibuprofen may provide faster onset of relief (30–60 minutes vs 1–2 hours for naproxen). For dysmenorrhea, both are first-line treatments with similar efficacy. For fever reduction, ibuprofen is more commonly used, particularly in pediatric settings where it has extensive safety data ^[4].

Both drugs share the classic NSAID side-effect profile: GI irritation (10–15%), nausea, dyspepsia, and increased risk of GI bleeding ^[1]. The risk of serious GI events (ulceration, hemorrhage, perforation) increases with dose, duration, age >65, and concurrent anticoagulant or corticosteroid use. Naproxen's longer duration of COX inhibition may theoretically increase GI risk with chronic use. Both carry an FDA boxed warning for cardiovascular thrombotic events (heart attack and stroke) ^[2]. However, naproxen has a distinguishing advantage: the PRECISION trial (>24,000 patients) and multiple meta-analyses suggest naproxen has a lower cardiovascular risk than other NSAIDs, possibly because its long half-life provides more sustained antiplatelet activity ^[3]. The AHA has recommended naproxen as the preferred NSAID for patients requiring anti-inflammatory therapy who have cardiovascular risk factors. Both drugs can impair renal function, raise blood pressure, and cause fluid retention. They should be avoided in the third trimester of pregnancy and used cautiously in patients with heart failure, CKD, or hepatic impairment ^[4].

OTC prices for both medications are very low. Ibuprofen 200 mg (100 tablets) costs $4–10 at most pharmacies ^[1]. Naproxen sodium 220 mg (100 tablets, as Aleve) costs $8–15. Prescription-strength generic ibuprofen 800 mg (30 tablets) costs $4–10, and generic naproxen 500 mg (30 tablets) costs $4–10 ^[2]. Brand-name versions (Advil, Motrin, Aleve) cost slightly more. Both are widely available OTC without a prescription, and most insurance plans cover prescription-strength formulations at the lowest copay tier.

Dosing frequency is a meaningful practical difference. Ibuprofen is taken every 4–6 hours as needed (maximum 3,200 mg/day prescription; 1,200 mg/day OTC) ^[1]. Naproxen is taken every 8–12 hours (maximum 1,500 mg/day prescription; 660 mg/day OTC) ^[2]. This means naproxen requires only 2 doses per day compared to 3–4 for ibuprofen, improving convenience for chronic use. Both should be taken with food or milk to reduce GI irritation. Ibuprofen is available in tablets, capsules, chewable tablets, oral suspension, and IV formulation, making it more versatile for different patient populations including children ^[3]. Naproxen is available in tablets, delayed-release tablets, and oral suspension. Ibuprofen has established pediatric dosing from age 6 months, while naproxen is approved from age 2 years ^[4].

For acute, short-term pain (headaches, minor injuries, post-procedure), ibuprofen is often preferred for its faster onset, wider range of formulations, and extensive pediatric safety data ^[1]. For chronic inflammatory conditions (arthritis, ongoing back pain), naproxen may be more practical due to its longer duration allowing twice-daily dosing ^[2]. For patients with cardiovascular risk factors, naproxen is the preferred NSAID based on evidence of lower cardiovascular risk (AHA recommendation) ^[3]. For patients with significant GI risk, neither NSAID is ideal without gastroprotection — but a PPI combined with naproxen may be a reasonable approach. For patients who can use either drug short-term, the choice may simply come down to what works best individually. Both should be used at the lowest effective dose for the shortest duration needed ^[4]. Consult your healthcare provider if you need regular NSAID use, especially if you have cardiovascular, renal, or GI risk factors.