The maximum over-the-counter dose of naproxen sodium is 3 tablets (660 mg) in 24 hours. With a prescription, the ceiling goes up to 1,500 mg per day depending on the condition being treated. The difference between OTC and prescription limits is significant, so knowing which version you’re taking matters.
OTC Naproxen Sodium Dosing
Over-the-counter naproxen sodium comes in 220 mg tablets (sold as Aleve and store-brand equivalents). The standard dosing schedule for adults and children 12 and older is one tablet every 8 to 12 hours while symptoms last. For your very first dose, you can take 2 tablets within the first hour to get ahead of the pain.
The hard limits: no more than 2 tablets in any 8- to 12-hour window, and no more than 3 tablets in a full 24-hour period. That means your absolute daily maximum from the store-bought version is 660 mg of naproxen sodium.
Prescription Dosing by Condition
Prescription naproxen comes in higher-strength tablets (250 mg, 375 mg, 500 mg, and controlled-release 750 mg), and the daily ceiling depends on what you’re treating.
- Arthritis and ankylosing spondylitis: Up to 1,500 mg per day, typically split into two or three doses. This is the highest daily amount prescribed.
- Menstrual cramps, tendinitis, and bursitis: Up to 1,000 to 1,375 mg per day, depending on the formulation. Controlled-release tablets cap at 1,000 mg; standard naproxen sodium tablets allow up to 1,375 mg.
These higher doses are only appropriate under medical supervision. A prescriber will factor in your specific condition, your weight, and how your kidneys and liver are functioning before setting a dose at this level.
Why the Dosing Intervals Matter
Naproxen sticks around in your body much longer than ibuprofen or aspirin. Its half-life ranges from 12 to 17 hours, meaning it takes roughly that long for your body to clear just half the dose. That’s why you only need to take it every 8 to 12 hours instead of every 4 to 6 hours like ibuprofen.
Standard naproxen sodium tablets reach peak levels in your blood within 1 to 2 hours. Regular naproxen (the prescription form) takes a bit longer, around 2 to 4 hours. Delayed-release versions can take 4 to 6 hours to fully kick in. This long duration is one of naproxen’s advantages for steady, all-day pain relief, but it also means that taking extra doses too close together can stack up quickly.
How to Take It
Swallow naproxen with a full glass of water. You can take it with or without food, but if it bothers your stomach, eating something first helps. This is especially worth doing if you’re taking it for more than a day or two, since naproxen (like all NSAIDs) can irritate the stomach lining over time.
Don’t lie down for at least 10 minutes after taking a tablet. This reduces the chance of the pill sitting in your esophagus and causing irritation there.
Lower Doses for Some People
Older adults and people with kidney, liver, or heart problems typically need lower doses. Naproxen is processed through the kidneys, so reduced kidney function means the drug clears more slowly and builds up faster. If you’re over 65, even OTC doses may need to be adjusted. The NHS notes that doses are usually lower for older people and those with organ impairment.
Children under 12 should not take OTC naproxen sodium unless directed by a doctor. Prescription naproxen for children is dosed by body weight, and the formulation is usually a liquid suspension rather than tablets.
Signs You’ve Taken Too Much
Naproxen overdose symptoms range from mild to serious. On the milder end, you might notice severe stomach pain, nausea, vomiting, or dizziness. More concerning signs include blurred vision, ringing in the ears, confusion, drowsiness, or difficulty breathing. In severe cases, seizures or loss of consciousness can occur.
If you or someone else has taken significantly more than the recommended dose, call Poison Control at 1-800-222-1222 or your local emergency number. Don’t wait for symptoms to appear. Having the bottle handy so you can report the strength and the number of tablets taken will help the responders assess the situation quickly.
OTC vs. Prescription at a Glance
- OTC naproxen sodium (220 mg tablets): Max 3 tablets (660 mg) per 24 hours
- Prescription for pain and inflammation: Max 1,000 to 1,375 mg per day
- Prescription for arthritis: Max 1,500 mg per day
If OTC naproxen isn’t controlling your pain within the 660 mg daily limit, that’s a signal to talk to a provider about whether a higher prescription dose is appropriate for your situation, not a reason to double up on store-bought tablets.