Both are NSAIDs, both fight pain and inflammation, and both are sitting on the same pharmacy shelf waiting for you to make a choice. The naproxen sodium vs ibuprofen decision really comes down to how long you want relief to last and how often you want to swallow a pill. Naproxen sodium (the active ingredient in Aleve) lasts roughly three times longer in the body than ibuprofen, which is why one Aleve caplet covers 8 to 12 hours while ibuprofen wears off in 4 to 6. For a broader look at over-the-counter pain relief, our medical conditions guide provides context. The short answer: pick naproxen sodium when you want long-lasting coverage with fewer pills, and pick ibuprofen when you want faster, shorter-duration relief.
Naproxen Sodium and Ibuprofen: Quick Comparison
Naproxen sodium 220 mg is the OTC strength (Aleve), equivalent to 200 mg of naproxen base plus sodium salt for faster absorption. Ibuprofen OTC is 200 mg per tablet. Both are nonselective NSAIDs that inhibit COX-1 and COX-2 enzymes. The key difference, per the FDA DailyMed label, is half-life: naproxen sodium runs 12 to 17 hours; ibuprofen runs 2 to 4 hours.
How Each One Works
Both block cyclooxygenase enzymes and reduce prostaglandin synthesis throughout the body. Prostaglandins drive pain, inflammation, and fever, so shutting them down produces analgesic, anti-inflammatory, and antipyretic effects.
The sodium salt in Aleve dissolves more quickly than plain naproxen, giving onset similar to ibuprofen (about 30 to 60 minutes). The underlying naproxen molecule, however, is cleared slowly by the kidneys, which gives the drug its long-lasting action.
Effectiveness: Head-to-Head Research
For acute pain, Cochrane reviews find no consistent clinical superiority of either drug when compared head-to-head. Number-needed-to-treat values cluster around 2 to 3 for both in dental and postoperative pain trials.
For sustained pain control, naproxen’s long half-life offers a practical advantage: you maintain therapeutic levels all day with just two doses. Ibuprofen requires three to four doses for equivalent coverage. The PRECISION trial also suggested slightly lower cardiovascular risk with naproxen compared with ibuprofen at prescription doses.
Side Effects Compared
Both drugs share the NSAID risk profile: stomach irritation, ulcers, GI bleeding, kidney strain, elevated blood pressure, fluid retention, and cardiovascular events at high doses. FDA NSAID warnings apply to the entire class.
Key difference: ibuprofen carries slightly higher cardiovascular risk than naproxen in observational data. Naproxen’s longer duration of COX-1 inhibition translates to slightly higher GI risk per unit time.
Dosing and How to Take Each
Naproxen sodium OTC: 220 mg every 8 to 12 hours, with a maximum of 660 mg (three caplets) per 24 hours. Ibuprofen OTC: 200 to 400 mg every 4 to 6 hours, with a maximum of 1,200 mg per day. Both should be taken with food or milk to reduce stomach upset. Our how often to take ibuprofen guide covers OTC dosing intervals in detail.
Which Is Better for Long-Lasting Pain?
Naproxen sodium is the clear winner for conditions where you want sustained coverage: menstrual cramps, arthritis flares, tendonitis, gout attacks, and lingering back pain. Two Aleve doses covers 24 hours comfortably.
Ibuprofen wins for short, intense episodes where you want fast onset and do not mind dosing again in a few hours. Tension headaches, post-workout soreness, and dental procedures often fit this pattern. Our naproxen vs ibuprofen comparison covers the full analysis.
Cost and Availability
Generic naproxen sodium 220 mg is about $8 to $14 for 100 caplets. Generic ibuprofen 200 mg is $5 to $10 for 100 tablets. Brand-name Aleve and Advil run 50 to 100 percent more than generics. Both are available OTC at every US pharmacy, supermarket, and convenience store.
Drug Interactions and Warnings
Both drugs interact with warfarin, aspirin, SSRIs, lithium, methotrexate, ACE inhibitors, and diuretics. Taking either with another NSAID doubles GI and kidney risks without adding pain relief. People with uncontrolled hypertension, chronic kidney disease, heart failure, or active ulcers should avoid both drugs unless cleared by a doctor. See our Tylenol vs ibuprofen article for non-NSAID alternatives.
When to seek emergency care: Call Poison Control (1-800-222-1222) or go to the ER immediately if you have taken more than the recommended dose of either medication.
Frequently Asked Questions
Is naproxen sodium the same as naproxen?
Not exactly. Naproxen sodium is the sodium salt of naproxen, which dissolves faster in the stomach for quicker onset. Prescription naproxen is often the plain base form. The sodium version (Aleve) absorbs about 30 minutes faster.
Can you take Aleve and ibuprofen together?
No. Both are NSAIDs, and combining them compounds GI, kidney, and cardiovascular risks without meaningfully improving pain control. Alternate with acetaminophen instead.
How long does one Aleve last?
About 8 to 12 hours. That is why the label says one caplet every 8 to 12 hours, unlike ibuprofen which is dosed every 4 to 6 hours.
Which is better for arthritis?
Naproxen is often preferred for chronic arthritis because its long half-life gives steadier coverage with fewer daily doses. Many rheumatologists start with naproxen for osteoarthritis.
Bottom Line
Naproxen sodium and ibuprofen are closer cousins than their branding suggests. For pain lasting more than a few hours, naproxen sodium’s long half-life makes it the more practical choice. For short, sharp pain episodes, ibuprofen works fine and is a bit cheaper. Both carry the class-wide NSAID risks, so use the lowest effective dose for the shortest necessary duration.