Discount Prescription Drug Generic for Ibuprofen Drug Interactions Usually drug interactions occur when the effect of particular drug is altered when it is taken with another drug or with food. Seek emergency medical help if you have symptoms of heart or circulation problems, such as chest pain, weakness, shortness ibuprofen fedex brez recepta of breath, slurred speech, or problems with vision or balance. Dosage of Advil is available in the form of dosages of 200 to 800 mg. Also tell your prescriber or health care professional if you are frequent user of drinks with caffeine or alcohol, if you smoke, or if you use illegal drugs.