Jim Morelli holds a B.S. from the Massachusetts College of Pharmacy and Allied Health in Boston and an M.S. in civil engineering from Tufts University. He is registered as a pharmacist in the state of Georgia. Most users of acetaminophen experience few, if any, side effects. But the drug can cause Find patient medical information for Naproxen Oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings. What Are the Most Common and Serious Side Effects of Celebrex? If you have any side effects from Celebrex, let your doctor know. The most common side effects are indigestion and headache. Naproxen, sold under the brand names Aleve and Naprosyn among others, is a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, menstrual cramps, inflammatory diseases such as rheumatoid arthritis, and fever. It is taken by mouth. It is available in immediate and delayed release formulations. Onset of effects is within an hour and. Chemotherapy Side Effects include vomiting, nausea, hair loss, nerve damage, fatigue, diarrhea, constipation and more. Side Effects. Drug information provided by: IBM Micromedex. Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention. Side effects from naproxen are more frequent if you need to take this medication over a long period of time. Digestive system complaints are the most frequent side effects of naproxen. Avelox (moxifloxacin) is a fluoroquinolone antibiotic used to treat bacterial infections. Includes Avelox side effects, interactions and indications. Explains the medication naproxen (Aleve, Naprosyn, Anaprox, Naprelan) a drug used for the management of mild to moderate pain, fever, and inflammation. Article includes descriptions, uses, drug interactions, and side effects. Read more about naproxen (Aleve, Naprosyn, Anaprox, Naprelan). Take naproxen tablets with or just after a meal or snack. Take the lowest dose of naproxen for the shortest time to control your symptoms. The most common side effects of naproxen are confusion, headache, ringing in the ears, changes in vision, tiredness, drowsiness, dizziness and rashes.