Hi there.
Modafinil or provigil is a central nervous system stimulant
and much abused. This can produce euphoria, it can be abused for a high sensation particularly by students as stimulants for staying up all night for exams. There are certain common side effects associated with its use like headache, dizziness, difficulty in falling asleep, drowsiness, nausea, heartburn, confusion and burning, tingling and numbness of skin. There could be certain withdrawal symptoms associated with it.