Wakefulness-Promoting Agents

    Armodafinil

    Armodafinil (Nuvigil) is a once-daily tablet for adults with excessive sleepiness from narcolepsy, obstructive sleep apnea or shift work disorder; it is one of the two mirror-image forms that make up modafinil. It is a Schedule IV controlled substance sold as generics and as Nuvigil, and it can make hormonal birth control less reliable during treatment and for one month after stopping.

    Written by the Script Unlock editorial teamLast updated October 8, 2026Not yet reviewed by an independent pharmacist

    This page is general information about a medication and how cash prices for it are set. It is not medical advice and does not replace the label, your prescriber or your pharmacist. How we handle medical information

    Brand names
    Nuvigil
    Generic available in the US
    Yes
    Dosage forms
    Tablets
    Strengths on US labels
    50, 150, 200 and 250 mg tablets
    Commonly prescribed for
    Narcolepsy, Obstructive Sleep Apnea, Shift Work Disorder

    Generic armodafinil tablets are sold alongside Nuvigil, which is still marketed; check that the prescription allows substitution and that your strength is in stock.

    About Armodafinil

    Like modafinil, armodafinil promotes wakefulness and is taken once a day. Its label covers adults with excessive sleepiness from narcolepsy, obstructive sleep apnea or shift work disorder; in sleep apnea it treats the sleepiness, not the obstruction, so CPAP or other treatment of the airway continues. For narcolepsy or sleep apnea the dose is 150 to 250 mg once a day in the morning; for shift work disorder it is 150 mg about an hour before the shift begins. The dose is reduced in severe liver impairment, older adults may be given a lower dose with closer monitoring, and it is approved only for adults.

    There is no boxed warning. Its warnings are much like modafinil’s: serious skin reactions, including Stevens-Johnson syndrome, which mean stopping it at the first sign of rash, skin or mouth sores, or blistering unless the rash is clearly unrelated; a drug reaction with fever, rash and other organs affected (DRESS); swelling of the face, lips, tongue or throat and anaphylaxis; and psychiatric symptoms such as mania, delusions, hallucinations, aggression and suicidal thoughts. It is not recommended for people with a history of left ventricular hypertrophy, or who had mitral valve prolapse syndrome with earlier stimulant use, and heart rate and blood pressure may be monitored more closely. Headache, nausea, dizziness and trouble sleeping are the common side effects. Anyone allergic to armodafinil or modafinil must not take it.

    Wakefulness may not return fully to normal, so the prescriber reassesses sleepiness and may advise against driving. As a Schedule IV drug, a prescription can carry up to five refills within six months of the date written, and refill information can be transferred between pharmacies only once unless they share a real-time online database. Hormonal contraceptives are less effective during treatment and for one month after the last dose, so another or an added method is needed. Intrauterine growth restriction and miscarriage have been reported with armodafinil and modafinil, and a pregnancy registry collects outcomes.

    Taking Armodafinil

    How to take it
    Once a day at about the same time: in the morning for narcolepsy or sleep apnea, or about an hour before the work shift for shift work disorder. Do not change the time without asking the prescriber, and keep using CPAP if it is prescribed.
    If you miss a dose
    MedlinePlus says to skip the missed dose and continue your regular schedule. Do not take a double dose to make up for it.
    Storage
    At room temperature in the original tightly closed container, away from excess heat and moisture (not in the bathroom), out of reach of children. Use a take-back program rather than flushing unused tablets.
    Interactions to know about
    Hormonal contraceptives are less reliable during treatment and for one month after stopping, and cyclosporine levels may fall. It can raise levels of omeprazole, phenytoin and diazepam, and warfarin may need more frequent clotting tests (INR). Avoid alcohol, ask the prescriber about grapefruit, and do not drive until you know how it affects you.

    This summarizes the official prescribing information. Your prescriber’s and pharmacist’s instructions, and the leaflet that comes with your medicine, take priority.

    Why the cash price for Armodafinil differs from pharmacy to pharmacy

    Generic armodafinil competes with the Nuvigil brand, so a quote for the generic reflects mainly the pharmacy’s markup and dispensing fee, while a prescription that names Nuvigil and blocks substitution is quoted at a brand price. With four strengths, a pharmacy may keep only some on hand and order the rest.

    Controlled-substance rules also play a part: refill information for a Schedule IV prescription can be transferred only once unless the pharmacies share a real-time database, so it is worth choosing the pharmacy before the first fill.

    Have a Armodafinil prescription?

    Upload it and licensed pharmacies reply with their own cash price. You pay the pharmacy, not us.

    Get quotes

    Ways to pay less for Armodafinil without insurance

    • Ask for generic armodafinil, and make sure the prescription allows substitution rather than naming Nuvigil only.
    • Check that your dose is written as one tablet of the right strength, not a combination of smaller tablets.
    • Compare more than one pharmacy, and confirm your strength is in stock before the prescription is sent.
    • If armodafinil is quoted high, ask the prescriber whether generic modafinil would suit you.
    • Upload the prescription to Script Unlock so licensed pharmacies can quote their cash price. You pay the pharmacy directly.

    How Script Unlock gets you a cash price for Armodafinil

    Prices on this site come from pharmacies responding to a real prescription. We do not publish estimated, average or "typical" prices, because none of those would be your price.

    1. 1You upload your prescription

      A photo of your Armodafinil prescription is enough. Nothing is sold on the site; you are asking pharmacies to quote.

    2. 2Licensed pharmacies respond

      Pharmacies that Script Unlock has verified see the request and each can reply with its own cash price for your exact drug, strength and quantity.

    3. 3You choose and pay the pharmacy

      You compare the responses, pick a pharmacy, and pay that pharmacy directly when you collect. Script Unlock never takes a patient payment and never sets the price.

    Questions to ask your pharmacist about Armodafinil

    1. 1.Should I take it in the morning or before my shift, and what if my shift changes?
    2. 2.Does it affect my hormonal birth control, and for how long after I stop?
    3. 3.Which rash, swelling or mood changes mean I should stop it and get help?
    4. 4.Does it interact with my omeprazole, diazepam, cyclosporine or seizure medicine?

    Where Armodafinil fits

    Refill, transfer and electronic-prescribing rules for controlled substances differ by state. See pharmacy rules by state.

    Sources

    Script Unlock is a marketplace that lets licensed pharmacies quote a cash price on your prescription. It does not prescribe, dispense or sell medication, does not process patient payments, and does not give medical advice. Always follow the instructions of your prescriber and pharmacist and read the medication guide supplied with your medicine.