The most you should take of Aleve at once is one pill (220 mg of naproxen sodium), unless it’s your very first dose, in which case the label allows two pills (440 mg) as a loading dose. After that initial dose, you take one pill every 8 to 12 hours, with a hard ceiling of three pills (660 mg) in 24 hours for over-the-counter use.
OTC Dosing: What the Label Says
Each Aleve tablet or caplet contains 220 mg of naproxen sodium. For adults and children 12 and older, the standard regimen is:
- First dose: 1 to 2 pills (220 to 440 mg)
- Subsequent doses: 1 pill (220 mg) every 8 to 12 hours
- 24-hour maximum: 3 pills (660 mg)
You should not exceed that 660 mg daily limit unless a doctor specifically tells you otherwise. The label also caps OTC use at 10 consecutive days for pain and 3 days for fever.
Why the 8- to 12-Hour Gap Matters
Naproxen has a long half-life of about 15 hours, meaning it takes that long for your body to clear just half the dose from your bloodstream. That’s dramatically longer than ibuprofen, which clears in about 2 hours. The upside is that Aleve keeps working for much longer per pill. The downside is that taking extra pills stacks the drug in your system quickly, raising your risk of side effects. The long gap between doses isn’t arbitrary; it reflects how slowly your body processes the drug.
Prescription Doses Are Higher
Doctors sometimes prescribe naproxen at much higher doses than what’s on the Aleve box. For conditions like rheumatoid arthritis or osteoarthritis, prescription doses typically run 500 mg twice daily (1,000 mg per day). For an acute gout attack, the starting dose can be 750 mg at once, followed by 250 mg every 8 hours. Controlled-release versions can go up to 1,000 mg once daily. These doses are only appropriate under medical supervision, with monitoring for stomach, kidney, and cardiovascular side effects.
Who Needs a Lower Dose
Adults 65 and older should generally take less naproxen and use it for shorter periods. Higher doses in older adults don’t necessarily work better for pain, but they do increase the likelihood of serious side effects, particularly stomach bleeding and kidney problems.
Naproxen carries meaningful risks for people with certain health conditions. It can cause ulcers, bleeding, or even holes in the stomach lining, and these problems can develop without warning symptoms. The risk climbs for people who smoke, drink alcohol regularly, have a history of stomach ulcers, or take the drug for extended periods. People with kidney disease, liver disease, or heart failure need to be especially cautious. If you’ve recently had a heart attack or are scheduled for heart surgery, naproxen is generally off the table.
Pregnant women should not take naproxen at or after 20 weeks of pregnancy, as it can harm the fetus and complicate delivery.
Medications That Don’t Mix Well With Aleve
If you take an SSRI antidepressant, adding naproxen raises your bleeding risk substantially. People on SSRIs are already about 40% more likely to develop serious gastrointestinal bleeding, and combining them with naproxen amplifies that risk further. In some cases, this combination has led to life-threatening bleeding in the brain.
Blood thinners like warfarin, antiplatelet drugs like aspirin or clopidogrel, and other NSAIDs like ibuprofen all interact poorly with naproxen. Taking Aleve alongside any of these increases your chance of internal bleeding. If you’re already on one of these medications, don’t add Aleve without checking with a pharmacist or doctor first.
Signs You’ve Taken Too Much
Naproxen overdose symptoms range from mild to severe. Early signs include bad heartburn, stomach pain, nausea, vomiting, and drowsiness. More serious overdose can cause blurred vision, ringing in the ears, confusion, dizziness, and labored breathing. In severe cases, seizures or loss of consciousness can occur. If you or someone else has taken significantly more than the recommended dose and develops any of these symptoms, that warrants emergency care.
Even at recommended doses, watch for dark or tarry stools, vomiting that looks like coffee grounds, or unusual bruising. These can signal stomach bleeding that needs attention regardless of how much you took.