Nuvigil, also known as Armodafinil, is a prescription medication used to treat excessive sleepiness associated with obstructive sleep apnea (OSA), narcolepsy, and shift work sleep disorder. It works by increasing the levels of certain chemicals in the brain that regulate wakefulness and alertness. Armodafinil 150mg is a commonly prescribed dosage strength for patients. When taken as directed, Nuvigil can help improve wakefulness and reduce excessive daytime sleepiness. However, it's essential for patients to follow the instructions provided by their healthcare provider and to report any unusual side effects or changes in their condition while using Nuvigil. Additionally, patients should be aware that Nuvigil is not a substitute for getting adequate sleep and should be used in conjunction with other treatments as directed.