Nuvigil vs Provigil vs Adderall: Three Very Different Prescriptions

Written by Dr. Marcus Bennett · Medically reviewed by Dr. Elena Marquez, MD · Fact-checked October 2026 · How we review

Nuvigil vs Provigil vs Adderall is a comparison people usually make when they're tired of being tired, or tired of a stimulant, and want to know whether one of the "wakefulness" drugs is a sensible alternative. The short version: Nuvigil and Provigil are siblings, while Adderall belongs to a completely different family with different rules.

We haven't tested any of these products. Everything below comes from the US prescribing information for Nuvigil (armodafinil), Provigil (modafinil) and Adderall and Adderall XR (mixed amphetamine salts), DEA scheduling rules, and Afinil's product pages checked on October 29, 2026. It's general information, not medical advice. Only a prescriber who knows your history can tell you which, if any, is right for you. We earn a commission if you buy through our Afinil links, at no extra cost to you.

The short answer

• Nuvigil and Provigil are nearly the same medicine. Provigil is modafinil. Nuvigil is armodafinil, the longer-lasting half of the modafinil molecule. They share the same three approved uses.
• Adderall is a different drug class. It's an amphetamine stimulant approved for ADHD and narcolepsy, not for sleep apnea or shift work.
• The legal rules differ sharply. Nuvigil and Provigil are Schedule IV. Adderall is Schedule II, with no refills allowed.
• None of the three is approved for studying, productivity or "focus" in healthy people.
• Generics exist for all three. Price depends on the pharmacy, your plan and the dose.

Nuvigil vs Provigil vs Adderall at a glance

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Nuvigil vs Provigil: the close cousins

Modafinil is a mixture of two mirror-image molecules, the R-form and the S-form. Armodafinil is just the R-form on its own. The Nuvigil label explains why that matters: the R-form is cleared from the body more slowly, so after a dose of armodafinil, blood levels later in the day are higher than they are after a comparable dose of modafinil.

That's the whole difference in a sentence. Both drugs are approved for the same three conditions:

• excessive sleepiness from narcolepsy,
• excessive sleepiness from obstructive sleep apnea (OSA), as an add-on to treating the underlying obstruction, not instead of it, and
• excessive sleepiness from shift work disorder.

The label doses are different numbers because the drugs aren't milligram-for-milligram the same. Provigil is usually 200 mg once a day, taken in the morning for narcolepsy or OSA, or about an hour before the shift for shift work disorder. Nuvigil is 150 mg or 250 mg once a day for narcolepsy or OSA, and 150 mg about an hour before the shift for shift work disorder. Both labels say higher doses didn't show a consistent extra benefit in studies.

For a deeper look at just these two, see our full Nuvigil vs Provigil comparison and our explainer on how long armodafinil lasts.

Where Adderall fits in

Adderall is a combination of amphetamine salts, a central nervous system stimulant. It works differently from modafinil and armodafinil: amphetamine pushes nerve cells to release more dopamine and norepinephrine and blocks their reuptake. The modafinil labels describe their drug's mechanism as not fully understood, though it binds to the dopamine transporter and raises dopamine levels in parts of the brain.

The approved uses also differ. Adderall IR tablets are approved for ADHD and narcolepsy. Adderall XR capsules are approved for ADHD only. Neither Adderall product is approved for sleep apnea or shift work disorder, and neither Nuvigil nor Provigil is approved for ADHD.

That last point surprises people. In 2006, an FDA advisory panel reviewed a modafinil product for children with ADHD (to be marketed as Sparlon). The panel voted against approval, largely because of a case in the trials that looked like Stevens-Johnson syndrome, a rare and serious skin reaction. The product was never approved. Any use of modafinil or armodafinil for ADHD in the US is off-label, which is a decision for a prescriber, not something a store page can settle.

Same tiredness, different problems

The reason these three get compared is that they can all make a person feel more awake. But they're aimed at different problems:

• Sleepiness that comes from a sleep disorder. This is the territory of Nuvigil and Provigil. A sleep specialist will usually look for the cause first, often with a sleep study.
• Inattention, impulsivity and hyperactivity from ADHD. This is where Adderall and other stimulants are used, after an ADHD evaluation.
• Narcolepsy. This is the overlap. Narcolepsy is the one condition where all three have been used, and Adderall IR, Nuvigil and Provigil are all labeled for it.

If you're not sure which problem you have, that's the question to take to a doctor, before you think about any brand or price.

How long each one lasts

All three have half-lives in roughly the same range, but they behave differently over a day.

Provigil. The label gives peak blood levels about two to four hours after a dose and an effective half-life of about 15 hours after repeated dosing. Food can delay the peak by about an hour.

Nuvigil. Peak levels come about two hours after a dose on an empty stomach. Food can push the peak back by two to four hours. The half-life is about 15 hours, and because only the slower-cleared R-form is present, levels stay higher into the afternoon.

Adderall. Adderall IR is often given in divided doses, with the first on waking and additional doses four to six hours apart. Adderall XR is a once-daily capsule designed to release in two stages. The XR label lists a half-life of about 10 hours for d-amphetamine and 13 hours for l-amphetamine in adults.

A long half-life is a double-edged sword. It can mean steady cover through a long shift, but a dose taken too late can interfere with sleep. All three labels warn about insomnia, and the timing advice on each label exists for that reason. Our guide to when to take Provigil covers the label timing for modafinil in more detail.

Side effects on the labels

These are the most common side effects reported in each drug's US clinical trials, not a complete list. Your pharmacist's leaflet and the full label have the rest.

Both modafinil labels warn that rare, serious skin reactions, including Stevens-Johnson syndrome, have been reported, and that the drug should be stopped at the first sign of a rash unless it's clearly unrelated. The Adderall labels carry a boxed warning, the FDA's strongest, about abuse, misuse and addiction. The FDA updated that warning for all prescription stimulants in 2023.

If you have heart problems, a psychiatric history, or a history of substance misuse, all three labels ask your prescriber to weigh that carefully. That's a conversation, not something to work out from a comparison page.

Legal status and refills

This is where the gap is widest.

Nuvigil and Provigil are Schedule IV. Federal rules allow a Schedule IV prescription to be refilled up to five times within six months of the date it was written. Your doctor can call it in, send it electronically or write it, depending on state law.

Adderall is Schedule II. Schedule II drugs have the tightest controls of any prescription medicine. No refills are allowed. Each fill needs a new prescription, and prescribers can issue multiple prescriptions covering up to a 90-day supply only under specific DEA rules. Since the end of 2022, many US patients also ran into stimulant shortages, which the FDA tracked publicly.

For all three, buying without a valid US prescription isn't a legal route. Some overseas stores label modafinil and armodafinil "OTC". That label doesn't change US law, and importing a controlled substance without a prescription can lead to a seized parcel. Our guides on whether buying modafinil is legal and the site's US legal notes go into the detail. If you don't have a prescriber yet, see getting a modafinil prescription from an online doctor.

Generic names and costs

All three have US generics:

• Provigil's generic is modafinil (see our page on the generic name for Provigil).
• Nuvigil's generic is armodafinil.
• Adderall's generic is dextroamphetamine saccharate, amphetamine aspartate, dextroamphetamine sulfate and amphetamine sulfate, usually just called "amphetamine salts" or "mixed amphetamine salts".

US pharmacy cash prices for each vary widely by store, pack size and discount program, so we won't quote a single number. If you have insurance, the plan's formulary and any prior authorization rules usually matter more than the list price. Our guides to armodafinil cost with insurance and modafinil cost without insurance walk through how to get a real quote.

What Afinil sells, and what it doesn't

Afinil sells Indian generic armodafinil and modafinil. It does not sell Adderall or any amphetamine, and you should treat any website offering Adderall without a prescription as a red flag.

When we checked on October 29, 2026, Afinil's Nuvigil Generic 150 mg (listed as made by HAB Pharma) and Provigil Generic 200 mg (also HAB Pharma) used the same price ladder:

Afinil also advertised 24% off for crypto payments. Prices change, so the cart is what counts. Neither product is FDA-approved, and neither has been through the FDA's bioequivalence review that US generics go through. Our armodafinil vs modafinil cost page compares the two ladders across Afinil's brands.

A made-up example: three people, three starting points

These are invented examples to show how the decision usually goes. They aren't dosing advice.

Example A: a night-shift nurse. She sleeps badly during the day and nods off on long night shifts. Her doctor diagnoses shift work disorder. Nuvigil and Provigil are both labeled for this, taken about an hour before the shift. Adderall isn't. Her prescriber chooses between the first two, partly on how long her shifts run and what her plan covers.

Example B: an adult with diagnosed ADHD. He struggles to start and finish tasks and has done since childhood. His treatment options are the ADHD medicines, which include Adderall and other stimulants and non-stimulants. Nuvigil and Provigil aren't approved for ADHD.

Example C: someone with narcolepsy. All three are labeled for narcolepsy, so this is the one case where the choice is genuinely open. A sleep specialist weighs side effects, schedule, other conditions and the practical burden of Schedule II rules.

Common myths

• "Nuvigil is just stronger Provigil." It's longer-lasting, not a different drug. Dose numbers aren't directly comparable.
• "Provigil is a gentle Adderall." They're different classes with different approved uses and different labels. Don't assume one replaces the other.
• "Schedule IV means it's safe." Scheduling reflects abuse potential, not overall safety. Both modafinil labels list rare serious reactions.
• "Smart drugs are approved for studying." None of these three is approved for boosting performance in healthy people. Our modafinil vs Adderall for studying page looks at what the research actually shows.
• "An overseas store's OTC label makes it legal." It doesn't in the US.

Questions to ask your prescriber

1. Is my main problem sleepiness, attention, or both?
2. Do I need a sleep study or an ADHD evaluation first?
3. Which of these is labeled for my diagnosis?
4. How should I time the dose around my work and sleep?
5. Which side effects should make me call you?
6. Does my plan cover the generic, and does it need prior authorization?
7. If I'm on a Schedule II drug, how will refills work month to month?

Which one makes sense?

Nuvigil may suit someone with a diagnosed sleep disorder who needs cover that lasts into the late afternoon or a long shift, once a day.

Provigil may suit the same person if a slightly shorter tail suits their schedule, or if they'd like the option of a lower dose, since modafinil also comes as a 100 mg tablet.

Adderall may suit someone with diagnosed ADHD, or someone with narcolepsy whose specialist thinks a stimulant is the better fit, and who can manage the stricter prescription rules.

None of them suits someone who just wants to study longer or push through poor sleep. Fixing the sleep usually comes first.

Verdict

Nuvigil vs Provigil vs Adderall isn't a three-way race between similar pills. Nuvigil and Provigil are near-twins for sleepiness from narcolepsy, sleep apnea and shift work, with Nuvigil lasting a bit longer through the day. Adderall is a Schedule II stimulant for ADHD and narcolepsy, with a boxed warning and no refills. All three need a valid US prescription. If you and your prescriber settle on armodafinil or modafinil, the generic route is far cheaper than the brands, and Afinil lists HAB Pharma generics of both, but the choice of drug comes first and the shop comes second.

FAQ

What is the main difference between Nuvigil, Provigil and Adderall?

Nuvigil (armodafinil) and Provigil (modafinil) are wakefulness-promoting agents approved for excessive sleepiness from narcolepsy, obstructive sleep apnea and shift work disorder. Adderall is an amphetamine stimulant approved for ADHD and narcolepsy. The first two are Schedule IV; Adderall is Schedule II.

Is Nuvigil stronger than Provigil?

Not in a simple sense. Nuvigil contains only the longer-lasting R-form of modafinil, so its usual 150 mg dose gives higher blood levels later in the day than 200 mg of Provigil. Many people describe that as a longer effect rather than a stronger one.

Is Nuvigil or Provigil approved for ADHD?

No. Neither label lists ADHD. The FDA declined to approve a modafinil product for children with ADHD in 2006 after serious skin-rash concerns. Adderall is one of the drugs that is approved for ADHD.

Which lasts longer, Nuvigil, Provigil or Adderall?

All three have half-lives in roughly the 10 to 15 hour range, but the labels describe them differently. Modafinil and armodafinil both have an effective half-life of about 15 hours. Amphetamine's half-life in adults is about 10 hours for d-amphetamine and 13 hours for l-amphetamine, per the Adderall XR label.

Can you get Adderall refills like Nuvigil or Provigil?

No. Adderall is Schedule II, so federal law allows no refills: each fill needs a new prescription. Nuvigil and Provigil are Schedule IV, which allows up to five refills within six months of the prescription date.

Which is cheapest?

Generic versions of all three exist in the US, and cash prices vary a lot by pharmacy and plan. Afinil sells Indian generic armodafinil and modafinil (as of October 29, 2026, from $2.99 down to $0.89 a tablet), but doesn't sell Adderall, which no legitimate online store ships without a prescription.

Can you switch from Adderall to Nuvigil?

Only your prescriber can decide that. They're different drug classes with different approved uses, so a switch isn't a like-for-like dose swap. A doctor will look at your diagnosis, history and what you need the medicine to do.

Are Nuvigil, Provigil and Adderall legal to buy online in the US?

All three need a valid prescription from a licensed US prescriber. Importing any controlled substance without one isn't a legal route, and customs can seize parcels. For Adderall, a Schedule II drug, the rules are stricter still.