Modafinildosage
modafinil 100 MG Oral Tablet [Provigil]
Dosage and administration
The recommended dosage of PROVIGIL for each indication is as follows: Narcolepsy or OSA: 200 mg once a day in the morning.
SWD: 200 mg once a day, taken approximately one hour prior to start of the work shift.
Severe Hepatic Impairment: reduce dose to half the recommended dose.
Geriatric Patients: consider lower dose.
2.1 Dosage in
Narcolepsy and Obstructive Sleep Apnea (OSA) The recommended dosage of PROVIGIL for patients with narcolepsy or OSA is 200 mg taken orally once a day as a single dose in the morning. Doses up to 400 mg/day, given as a single dose, have been well tolerated, but there is no consistent evidence that this dose confers additional benefit beyond that of the 200 mg/day dose.
2.2 Dosage in
Shift Work Disorder (SWD) The recommended dosage of PROVIGIL for patients with SWD is 200 mg taken orally once a day as a single dose approximately 1 hour prior to the start of their work shift.
2.3 Dosage Modifications in
Patients with Severe Hepatic Impairment In patients with severe hepatic impairment, the dosage of PROVIGIL should be reduced to one-half of that recommended for patients with normal hepatic function.
2.4 Use in Geriatric
Patients Consideration should be given to the use of lower doses and close monitoring in geriatric patients.
Text above is quoted in full from the FDA-approved drug label published by openFDA, effective August 27, 2025. Matched to this product by RxNorm code. Cross-references to other sections of the full prescribing information have been removed, since they point to a document not shown here. Nothing else is changed: no sentence is shortened, reworded or summarised.
This page reproduces regulatory text for reference. It is not medical advice, and KenyRx is not a pharmacy or a prescriber. Talk to a doctor or pharmacist about whether a medicine is right for you.
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