Provigil has a generic form Modafinil manufactured by Cephalon. It is indicated by doctors for the treatment of excessive sleepiness caused by narcolepsy or other sleep disorders. It may also be prescribed in some other states. Provigil is designed to provide wakefulness but actually it is not clear how the drug works.

Provigil is believed to change neurotransmitters inside the brain.

Do not take Provigil in case of any allergy to any drug components. Provigil is prohibited in pregnancy or planning pregnancy, and during breast-feeding period. The drug is not recommended in any cardiovascular diseases, liver or kidney disorders.

Provigil may cause side-effects such as headache, dizziness, nausea, back pain, or sleeping problemss.