Ibuprofen is classified as a nonsteroidal anti-inflammatory drug (NSAIDs). It is used to treat mild to moderate pain and helps to relieve symptoms of arthritis, such as inflammation, swelling, stiffness and joint pain, states the Mayo Clinic. Pregnant women should avoid Ibuprofen due to the risk of birth defects. The highest recommended dosage is 800 milligrams (mg), because at this amount, it can trigger mild to severe side effects.
Taking 800 mg of Ibuprofen may cause gastrointestinal effects. Symptoms include nausea, heartburn, constipation, bloating, flatulence and diarrhea. Taking your medication with food may help decrease side effects. Ibuprofen and other NSAIDs can also increase your risk of serious effects on the stomach or intestines, including bleeding or perforation, states Drugs.com. This can be a medical emergency. Ibuprofen may also contribute to the development of gastric ulcers, which may be painful and cause bleeding. If you are taking Ibuprofen and experience severe stomach pain, vomiting blood, or black or bloody stools, seek immediate medical attention.
Rash and Itching
You may experience a skin rash that may or may not itch while taking 800 mg of Ibuprofen. The rash may appear as flat or small raised lesions on your skin. Contact your physician if you develop a skin rash. He may recommend a colloidal oatmeal bath, calamine lotion, corticosteroid cream or Benadryl to relieve rashes and itching.
Headache and Dizziness
You can experience a headache or dizziness while taking Ibuprofen. You may want to use caution while driving or operating machinery until you know how the dosage affects you.
Allergic or Cardiac Effects
Get emergency medical help if you have any of these signs of an allergic reaction to ibuprofen: hives; difficulty breathing; or swelling of your face, lips, tongue or throat. Cardiac reactions to Ibuprofen are rare but may occur. Symptoms include weakness, chest pain, shortness of breath, blurred vision, speech difficulty or difficulty balancing. If you are taking 800 mg of Ibuprofen and experience any of these symptoms, seek emergency medical care.