Possible side effects of Advil include upset stomach, diarrhea, nausea, dizziness and drowsiness, according to WedMD. Patients who experience rare but serious side effects, such as dark urine, yellowing of the skin or eyes, or persistent nausea, after using Advil, should seek immediate medical attention.
Most people who use Advil do not have serious side effects, states WebMD. In some cases, patients may experience vision changes, unusual tiredness, ringing in the ears, or swelling in the ankles after taking Advil, and patients with these symptoms should report them to their doctors immediately. Allergic reactions to Advil are rare, but when they occur, symptoms such as rash, itching, trouble breathing, and swelling of the face or throat appear. Patients who think they are experiencing an allergic reaction to Advil should seek emergency medical care.
Advil contains the active ingredient ibuprofen, which is known to cause stomach bleeding in some patients, according to WebMD. Patients can reduce the risk of stomach bleeding by limiting alcohol intake while taking Advil. Women who are pregnant or thinking of becoming pregnant should speak to their doctors before taking Advil since it may interfere with fetal development. Patients should take Advil only every four to six hours and take each dose with a full glass of water unless instructed otherwise by a physician. Those who experience upset stomach after taking Advil should take it with food or milk.