Modvigil and Modalert are generic versions of the drug Modafinil. In short, they are chemically identical, but they are produced by different pharmaceutical companies and marketed under different names. Both drugs increase alertness and promote sustained mental focus, though users report subtle differences. Dosage recommendations are similar. Side effects tend to be minor for both but rarely, can be serious. Modafinil is a controlled substance; however, both Modvigil and Modalert can be discreetly purchased online in most countries.
