The maximum amount of ibuprofen that an adult can take without experiencing potential complications is 800 mg per dose, or 3200 mg in a 24-hour period, according Drugs.com. Any individual who has taken more than the recommended dose of ibuprofen should seek medical attention.
An overdose of ibuprofen can lead to difficulty breathing, extreme lethargy, drowsiness and severe stomach pain, notes WebMD. More severe symptoms of overdose include complications to the nervous system, such as seizures, or gastrointestinal problems, such as diarrhea and vomiting, states HealthCentral.
The kidneys may also be affected in instances of ibuprofen overdose, with symptoms such as low or absent urine production. If a doctor suspects ibuprofen overdose, various medical tests, including a test of kidney function, may be performed to monitor the patient's progress, notes WebMD. Typically, patients recover quickly from ibuprofen overdose with immediate medical attention.
Ibuprofen can lead to side effects even when taken at the recommended amount. Individuals taking ibuprofen should seek medical attention if they experience easy bruising or bleeding, changes in mood, swelling of the extremities, or vision problems, suggests WebMD. Signs of potential liver damage, such as darkening of the urine, severe stomach pain or jaundice, require immediate medical attention.