Provigil is a prescribed medication that is used to treat excessive sleepiness in patients related to narcolepsy, shiftwork sleep disorder, etc. It contains modafinil, a Schedule IV controlled substance, and belongs to a class of medications called stimulants. Provigil contains 100 mg and 200 mg oral tablets. The form of Provigil 100 mg is a white to off-white color pill (imprinted as PROVIGIL on one side and 100 MG on another side) and Oval in shape. The Anatomical Therapeutic Chemical (ATC) number of Provigil 100mg tablet is N06BA07. It is used to improve wakefulness in adults with excessive sleepiness associated with narcolepsy, obstructive sleep apnea (OSA), or shift work disorder (SWD); and is available in a generic form called modafinil. Provigil 100 mg tablet may be taken once daily in the morning. You may take this drug with or without food (in the morning). During pregnancy, it should be used only if it is recommended by the health specialists. However. Breastfeeding is not recommended because it may pass into breast milk, and it leads to serious side effects in a breastfed child. People with heart disease and high BP should not use this tablet, because it may cause heart attack or stroke. Before you take this medication, it is highly recommended to be sure to talk with your doctor or specialist.