Naproxen

Naproxen (brand names: Aleve, Naprosyn, and many others) is a nonsteroidal anti-inflammatory drug (NSAID) of the propionic acid class (the same class as ibuprofen) that relieves pain, fever, swelling, and stiffness. It is a nonselective COX inhibitor, usually sold as the sodium salt. It is available in both an immediate release and extended release formulation. Naproxen is generally safe to use in breastfeeding mothers.

Side Effects
More commonly reported ones are:

More commonly reported ones in children are:

Less commonly reported ones are: