According to the Aleve website, Aleve does not contain any caffeine. Aleve does not contain acetaminophen, ibuprofen or aspirin either. Aleve should not be mixed with any other pain reliever unless an individual is explicitly told to do so by a medical professional.
The Aleve website states that Aleve contains sodium. There are 20 milligrams of sodium in each Aleve tablet, caplet, gelcap and liquid gel capsule to make the main ingredient, naproxen, break down more quickly. Aleve is considered to be a low-sodium product, according to the FDA.
Aleve does not add gluten to its products, notes the Aleve website, but there may be small amounts of gluten in Aleve due to the fact that the product is made in a facility where items containing gluten are processed.