Modafinil is used to treat excessive sleepiness which is caused by narcolepsy, obstructive sleep apnea and
shift work sleep disorder. It is also used along with breathing devices to prevent excessive sleepiness
caused by Obstructive Sleep Apnea Hypopnea Syndrome (OSAHS).
Dosage and Administration
Modafinil should be swallowed whole and not crushed or chew.
If you are taking Modafinil for the treatment of OSAHS or narcolepsy, it should be taken in the morning.
You should take it one hour before the beginning of your work shift if you take Modafinil for treating shift
work sleep disorder.
Take Modafinil at the same time every day. Don’t change the time of the day without doctor advice.
Take Modafinil exactly as directed.
Don’t take modafinil if you have history of certain heart or heart valve problems, kidney problems, or high
Inform your doctor if you are taking a monoamine oxidase inhibitor (MAOI).
It may be habit forming. Don’t take larger dose or take it for longer period of time than prescribed by your
Taking modafinil may decrease the effectiveness of hormonal contraceptives including birth control pills,
rings, implants, injections and intrauterine devices.
Alcohol consumption should be avoided.
Tell your doctor if you are pregnant, plan to become pregnant or are breast feeding.
Modafinil may affect your judgment or thinking and may not completely relieve the sleepiness. Don’t
involve in any activity that require alertness.
Some common side effects caused by Modafinil are headache, dizziness, drowsiness, heartburn, dry
mouth, excessive thirst, flushing, nosebleed, nausea, diarrhea, constipation, numbness, sweating, and
uncontrollable shaking of a part of your body, tight muscles, and loss of appetite. Consult your doctor in
case of any of these side effects. Some severe side effects may include rash, blisters, pale skin, hives,
itching, chest pain, anxiety, irregular heartbeat, hoarseness, mouth sores, hallucinating, and difficulty in
breathing. Call your doctor immediately if these side effects persist.