The standard adult dose of Motrin (ibuprofen) is 200 to 400 mg every four to six hours as needed, with a maximum of 1,200 mg in 24 hours when using the over-the-counter version. Prescription-strength ibuprofen can go higher, up to 3,200 mg per day, but only under a doctor’s supervision for conditions like arthritis.
Standard Adult Dosing
Most OTC Motrin tablets come in 200 mg. For general pain relief, you can take one to two tablets (200 to 400 mg) every four to six hours. For menstrual cramps, the recommended dose is 400 mg every four hours as needed. In either case, don’t exceed three tablets (600 mg) in a single dose or six tablets (1,200 mg) in a 24-hour period without medical guidance.
The difference between OTC and prescription ibuprofen comes down to dose size and supervision. Prescription ibuprofen is commonly given as 600 or 800 mg tablets for inflammatory conditions like rheumatoid arthritis or osteoarthritis, where the daily total can range from 1,200 to 3,200 mg divided into three or four doses throughout the day. These higher doses carry more risk of side effects, which is why they require a prescription.
How Long You Can Take It
For pain, you shouldn’t take OTC ibuprofen for more than 10 consecutive days. For fever, the limit is three days. If you still need relief after that point, something else may be going on that warrants a closer look from a healthcare provider. This isn’t an arbitrary rule. Prolonged use increases the chances of stomach irritation, kidney strain, and cardiovascular problems.
Taking Motrin With Food
Ibuprofen is easier on your stomach when taken with food or a glass of milk. It can cause nausea, heartburn, or stomach pain on an empty stomach, and eating something beforehand reduces that risk. The tradeoff is that food may slow absorption slightly, so the pain relief could take a few extra minutes to kick in. If your stomach is sensitive, the protection is worth the wait.
Dosing for Children
Children’s Motrin is dosed by weight, not age, and comes in liquid form for younger kids. Ibuprofen should not be given to infants under 6 months old. For older children, you can give a dose every six to eight hours as needed, but the amount depends on the child’s weight. The packaging includes a dosing chart, and following it closely matters because children are more sensitive to incorrect amounts. The adult dose of 400 mg applies to teenagers.
Who Should Avoid Motrin
Certain people should skip ibuprofen entirely or use it only with medical approval:
- Recent heart attack or heart surgery: Ibuprofen can increase cardiovascular risk and should not be taken right before or after procedures like coronary artery bypass grafting.
- Pregnancy at 20 weeks or later: Ibuprofen can cause serious complications for the developing baby in the second half of pregnancy.
- History of stomach ulcers or GI bleeding: Ibuprofen irritates the stomach lining and can worsen or trigger bleeding in people with a history of ulcers.
- Kidney problems: The drug is processed through the kidneys, and regular use can accelerate damage in people with existing kidney disease.
Interactions With Blood Thinners
Combining Motrin with blood thinners is one of the most common and dangerous drug interactions. Ibuprofen affects how platelets work, which interferes with normal clotting. If you’re already taking an antiplatelet drug like aspirin or an anticoagulant like warfarin, adding ibuprofen on top raises your bleeding risk significantly, especially in the digestive tract.
This gets tricky because ibuprofen hides in many products you might not expect. Advil PM, some cold and flu remedies, and combination pain relievers all contain ibuprofen or related anti-inflammatory ingredients. If you take a blood thinner, check the active ingredients on every OTC medication before using it. Products like Pepto-Bismol and certain antacids contain compounds related to aspirin that carry similar risks.
Signs You’ve Taken Too Much
Ibuprofen overdose is uncommon at normal doses but can happen if someone takes significantly more than recommended, especially over a short period. Early warning signs include severe stomach pain, nausea, vomiting, and heartburn. More serious symptoms include ringing in the ears, blurred vision, confusion, difficulty breathing, and very low urine output. Seizures and loss of consciousness can occur in severe cases. If you or someone else has taken a large amount of ibuprofen and is showing any of these symptoms, call Poison Control (1-800-222-1222) or seek emergency care immediately.