The Aleve website states that caffeine is not present in Aleve. Acetaminophen, ibuprofen, and aspirin are not included in Aleve either. Any other painkiller should not be combined with Aleve unless specifically instructed to do so by a medical specialist.
Aleve contains salt, according to its website. Each Aleve tablet, caplet, gelcap, and liquid gel capsule contains 20 milligrammes of salt to hasten the breakdown of the active ingredient, naproxen. According to the FDA, Aleve is a product that contains little salt.
According to the Aleve website, the company does not add gluten to its products, but due to the fact that Aleve is produced in a facility that also processes products that contain gluten, there may be trace levels of gluten in Aleve.