For tooth pain, adults can take 400 mg of ibuprofen every four to six hours as needed, up to a maximum of 1,200 mg in 24 hours when self-treating with over-the-counter products. That’s two standard 200 mg tablets per dose, with at least four hours between doses. Most toothaches respond well to this amount, and ibuprofen is particularly effective for dental pain because it reduces both the inflammation and the nerve sensitivity driving the discomfort.
Adult Dosing for Tooth Pain
The standard over-the-counter dose is 200 to 400 mg every four to six hours. For a toothache, 400 mg (two tablets) is the more effective starting point. If you’re using OTC ibuprofen without a dentist’s guidance, keep your total daily intake at or below 1,200 mg, which works out to three doses of 400 mg spaced at least six hours apart.
Under a dentist’s or doctor’s direction, the dose can go higher. Prescription-strength ibuprofen for dental pain ranges from 400 to 600 mg per dose, and total daily amounts can reach up to 3,200 mg when medically supervised. But that upper range is reserved for specific situations and short durations, not something to try on your own.
Why Ibuprofen Works Well for Dental Pain
Tooth pain usually involves inflammation in or around the tooth’s nerve. When tissue is damaged or infected, your body produces chemical signals called prostaglandins that amplify swelling and make nerve endings hypersensitive. Ibuprofen blocks the enzyme responsible for producing those signals, which means it tackles the pain at its source rather than just masking it. This is why it tends to outperform acetaminophen for toothaches: it’s fighting the inflammation that’s pressing on the nerve, not just dulling your perception of pain.
Combining Ibuprofen With Acetaminophen
If 400 mg of ibuprofen alone isn’t enough, the most effective next step isn’t taking more ibuprofen. It’s adding acetaminophen. The American Dental Association recommends 400 to 600 mg of ibuprofen combined with 500 mg of acetaminophen every six hours for moderate to severe dental pain. This combination works through two different pathways and, in clinical practice, often provides stronger relief than either drug alone or even some prescription painkillers.
The FDA has approved a fixed-dose OTC product containing 250 mg ibuprofen and 500 mg acetaminophen per two-caplet dose, so you can find this combination pre-packaged. Alternatively, you can take a standard ibuprofen dose alongside a regular acetaminophen dose, spacing each combination every six hours. Just be careful not to exceed 3,000 mg of acetaminophen in a day from all sources combined.
Dosing for Children
Children’s ibuprofen doses are based on weight, not age. Do not give ibuprofen to any child under six months old. For children six months and older, the general guideline is roughly 5 to 10 mg per kilogram of body weight per dose, given every six to eight hours. Here are some practical benchmarks using common products:
- 24 to 35 lbs: 100 mg per dose (one chewable 100 mg tablet or 5 mL of children’s liquid)
- 36 to 47 lbs: 150 mg per dose (1.5 chewable tablets or 7.5 mL of children’s liquid)
- 48 to 59 lbs: 200 mg per dose (one adult 200 mg tablet or 10 mL of children’s liquid)
- 72 to 95 lbs: 300 mg per dose (1.5 adult tablets or 15 mL of children’s liquid)
- 96 lbs and over: 400 mg per dose (two adult tablets or 20 mL of children’s liquid)
Always use the measuring device that comes with the product rather than a kitchen spoon.
How Long You Can Safely Use It
Ibuprofen is meant to bridge the gap until you can get dental treatment, not replace it. Most OTC labels recommend no more than 10 days of continuous use for pain. For tooth pain specifically, if you’re still reaching for ibuprofen after two or three days, that’s a strong signal the underlying problem needs professional attention, whether it’s a cavity, a crack, or an infection.
Prolonged use carries real risks. Doses above 1,200 mg per day over extended periods are associated with a higher chance of kidney problems, particularly in older adults and people with existing heart, liver, or kidney conditions. Using ibuprofen for more than 14 consecutive days has been linked to a significantly increased risk of kidney-related complications even in otherwise healthy people. Stomach irritation and ulcers are also a concern with longer use.
Who Should Be Cautious
Ibuprofen isn’t safe for everyone. People with high blood pressure face compounded risks because ibuprofen can interfere with the way your kidneys regulate blood flow. If you take blood pressure medications, particularly diuretics or ACE inhibitors, combining them with ibuprofen raises the likelihood of kidney damage. A large follow-up study of nearly 80,000 patients found a strong link between chronic NSAID use alongside these medications and kidney injury.
You should also be cautious or choose an alternative if you have a history of stomach ulcers, kidney disease, heart failure, or liver problems. People who are dehydrated, such as those fighting an illness with fever, are at higher risk for kidney side effects because ibuprofen further restricts blood flow to the kidneys when your fluid volume is already low. Acetaminophen alone is a safer choice in these situations, though it won’t address inflammation the way ibuprofen does.
Signs the Pain Needs More Than Ibuprofen
Tooth pain that doesn’t respond to 400 mg of ibuprofen, or that keeps returning as soon as the dose wears off, usually means something structural or infectious is going on. Pay attention to swelling in your gums, cheek, or jaw, especially if the area feels warm or looks red. Swelling that makes it hard to open your mouth fully, fever alongside tooth pain, or a foul taste in your mouth can all point to an abscess or spreading infection. These situations won’t resolve with pain medication alone and can become serious if left untreated.