Adults can take Aleve (naproxen sodium) every 8 to 12 hours, depending on the dose. Each dose provides up to 12 hours of pain relief, which means most people only need it twice a day. That’s significantly less frequent than ibuprofen or acetaminophen, which require dosing every 4 to 6 hours.
Standard Dosing Schedule
Each over-the-counter Aleve tablet contains 220 mg of naproxen sodium. For pain, fever, or menstrual cramps, the typical approach is to take one tablet every 8 to 12 hours. You can take two tablets (440 mg) as your first dose, then drop to one tablet every 8 to 12 hours after that. Do not exceed three tablets (660 mg) in a 24-hour period unless directed otherwise by a doctor.
Prescription-strength naproxen sodium comes in higher doses, typically 275 mg or 550 mg tablets. At prescription strength, the dosing is 550 mg for the first dose, then either 550 mg every 12 hours or 275 mg every 6 to 8 hours. These higher doses should only be taken under medical supervision.
Why Aleve Lasts Longer Than Other Pain Relievers
Naproxen sodium stays active in your body far longer than most OTC pain medications. Its half-life ranges from 12 to 17 hours, meaning it takes that long for your body to eliminate just half of a single dose. By comparison, ibuprofen’s half-life is only about 2 hours, which is why you need to take it every 4 to 6 hours to maintain relief.
This long duration is one of Aleve’s biggest advantages for conditions that cause steady, ongoing pain like arthritis, back pain, or menstrual cramps. You can take a dose in the morning and reasonably expect it to carry you through to the evening. But that same long-acting property also means that if you take too much, the excess stays in your system longer, raising the risk of side effects.
How Long You Can Take It Consecutively
The OTC label on Aleve recommends no more than 10 consecutive days for pain and no more than 3 days for fever without talking to a doctor. These aren’t arbitrary cutoffs. Naproxen sodium belongs to the NSAID class of drugs, and all NSAIDs carry increasing risks to your stomach lining and kidneys the longer you use them. Long-acting NSAIDs like naproxen tend to carry a somewhat higher risk of stomach ulcers or GI bleeding compared to shorter-acting options like ibuprofen.
If your pain persists beyond 10 days, that’s worth investigating rather than simply continuing to take Aleve. Chronic use is sometimes appropriate, particularly for conditions like arthritis, but it should be monitored.
Risks of Taking It Too Often
Taking Aleve more frequently than recommended, or at higher doses, increases the chance of stomach and intestinal problems. The most common symptoms of overuse are heartburn and stomach pain, which can signal irritation or bleeding in the digestive tract. As a class, NSAIDs are responsible for more serious drug-related side effects than any other group of pain relievers, largely because of how commonly they’re used and how easy it is to overdo them.
Your kidneys are the other major concern. Naproxen reduces blood flow to the kidneys as part of how it works, and at excessive doses or with prolonged use, this can impair kidney function. People who already have kidney or liver disease face a higher risk of serious complications. In rare, severe overdose cases, kidney dialysis may be needed.
The risk also goes up if you’re taking other NSAIDs at the same time. Combining Aleve with ibuprofen, aspirin, or prescription anti-inflammatory drugs stacks the same type of effect on your stomach and kidneys without providing meaningfully better pain relief. If one NSAID isn’t managing your pain, switching to a different class of pain reliever is generally safer than layering NSAIDs together.
Older Adults and Higher-Risk Groups
Adults over 65 are more vulnerable to NSAID side effects, particularly GI bleeding and kidney problems. The stomach lining thins naturally with age, and kidney function gradually declines, both of which make naproxen hit harder. If you’re over 65, it’s reasonable to use the lowest effective dose for the shortest time possible, and to favor the 12-hour dosing interval over the 8-hour one.
People who take blood thinners, have a history of stomach ulcers, or have heart disease also face elevated risks with regular NSAID use. Taking Aleve with food or a full glass of water can help reduce stomach irritation, though it doesn’t eliminate the underlying risk with frequent or prolonged use.
Quick Dosing Reference
- OTC dose: 220 mg (one tablet) every 8 to 12 hours, with up to 440 mg for the first dose
- OTC daily max: 660 mg (three tablets) in 24 hours
- Duration of relief: up to 12 hours per dose
- Max consecutive days (pain): 10 days without medical guidance
- Max consecutive days (fever): 3 days without medical guidance