Narcolepsy is a chronic sleep disorder characterized by excessive daytime sleepiness, sleep attacks (falling asleep without warning), frequent nighttime awakenings, and difficulty staying awake and focusing during the day. It is often caused by low levels of hypocretin, a chemical in your body that helps regulate sleep.

Approximately 200,000 Americans and 3 million people worldwide have narcolepsy, but only about 25% are properly diagnosed and treated.

Provigil (modafinil) and Adderall (amphetamine and dextroamphetamine salts) are prescription drugs used to treat narcolepsy. However, they work differently. Please continue reading to find out the key differences between Provigil vs. Adderall for narcolepsy.

What are the key differences between Provigil vs. Adderall?

The main differences between Provigil vs. Adderall are as follows:

Drug Class

Provigil is a prescription medication. It is a brand-name product for the generic form of modafinil. It belongs to a group of drugs called wakefulness-promoting agents. Provigil is a Schedule IV controlled substance, according to the Drug Enforcement Agency (DEA), meaning it has accepted medical uses but carries a risk of abuse and addiction.

Adderall is also a prescription medication. It is a brand-name product of a combination of the generic form of dextroamphetamine and amphetamine. It belongs to a group of drugs called central nervous system (CNS) stimulants. Because of its stimulant properties, Adderall is a Schedule II controlled substance, according to the Drug Enforcement Agency (DEA), meaning it carries a high risk of drug abuse and dependence. Find out: How Long Does Adderall Stay in Your System?

Uses

Provigil is FDA-approved to treat excessive sleepiness caused by narcolepsy. It is also used to treat sleep disturbances due to shift work sleep disorder and obstructive sleep apnea. Provigil may be used off-label to treat attention deficit hyperactivity disorder (ADHD).

Adderall is FDA-approved to treat ADHD symptoms. The immediate-release form of Adderall is approved to treat narcolepsy.

Dosage and Administration

Both modafinil (Provigil) and amphetamine salts (Adderall) come in the form of oral tablets to take by mouth. Modafinil & Adderall XR (extended-release capsules) are usually taken once a day. Adderall IR (immediate release) tablets are usually taken once or twice daily but can be used up to 6 times a day.

It is important to remember only Adderall immediate-release is used for narcolepsy, not Adderall XR.

Modafinil (Provigil)

Narcolepsy:
- Take 200 milligrams (mg) by mouth once daily in the morning; doses up to 400 mg daily as a single dose have been used without evidence of additional benefits.
Shift work sleep disorder:
- Take 200 mg by mouth once daily 1 hour before the start of a work shift

Adderall (mixed amphetamine salts)

Narcolepsy
- Immediate-release tablet: a total of 5 to 60 mg by mouth daily in divided doses (not all at once). Take the first dose when waking up, followed by other doses every 4 to 6 hours.
- Your doctor will instruct you on how much to take for the first dose when you wake up and for other doses later in the day. Your doctor may adjust the dose to ensure the medication works best for you as the treatment continues.

Both modafinil & amphetamine salts are controlled substances and can be habit-forming. Adderall (mixed amphetamine salts) is a Schedule II controlled substance, while Provigil (modafinil) and Nuvigil (armodafinil) are Schedule IV controlled substances. This means the risk of misuse and physical and psychological dependence is higher with Adderall than Provigil (modafinil) and Nuvigil (armodafinil).

It’s important to take Nuvigil, Provigil, and Adderall exactly as prescribed. Do not change the dose or dosage frequency without talking to your healthcare provider.

These medications can help to control narcolepsy symptoms, but they will not cure the condition. Stopping them suddenly may cause significant withdrawal effects. Do not stop narcolepsy treatment without talking to your doctor. Your doctor will tell you how to lower the dose slowly to prevent withdrawal symptoms.

Read Next: How Long Do Adderall Withdrawals Last?

Drug Interactions

Both Adderall & Provigil can interact with other medications and increase the risk of severe adverse effects and health complications.

Provigil can have a drug interaction with anticoagulants, antidepressants, monoamine oxidase (MAO) inhibitors, certain antifungal agents, anti-seizure medications, and hormonal contraceptives (hormonal birth control).

Adderall can have a drug interaction with medications for heartburn and stomach ulcers, blood pressure medications, drugs prescribed for a psychotic disorder, serotonergic drugs, migraine medications, antiepileptic drugs, antidepressants, certain diuretics (water pills), and some HIV (human immunodeficiency virus) medications.

Give your doctor a complete list of all your medicines, including prescription drugs, over-the-counter medications, dietary supplements, and herbal supplements before starting narcolepsy treatment.

Medical Conditions

You should give your doctor a complete medical history and medication list (both prescription and over-the-counter products) before starting treatment for narcolepsy.

Provigil (modafinil) may not be safe for people with a history of heart problems, elevated blood pressure, mental illness, psychosis, liver disease, or kidney disease.

Adderall (amphetamine and dextroamphetamine) may not be suitable for people with heart and blood pressure problems, including high blood pressure, glaucoma, hyperthyroidism (overactive thyroid gland), depression, severe agitation, bipolar disorder, Tourette’s syndrome (tics), vascular problems, liver disease, or kidney disease.

Controlled substances like Adderall and Provigil carry the risk of misuse and abuse, leading to physical and psychological dependence. Before starting treatment with a controlled substance, let your doctor know if you have a history of substance abuse with drugs or alcohol.

Side Effects

Taking modafinil (Provigil) can cause side effects such as dizziness, drowsiness, headache, insomnia, heartburn, gas, stomach pain, nausea, diarrhea, constipation, loss of appetite, unusual taste, excessive thirst, dry mouth, sweating, flushing, back pain, confusion, muscle tightness, difficulty moving, eye pain, difficulties with vision, uncontrolled shaking, and burning, tingling, or numbness of the skin.

Common side effects of amphetamine and dextroamphetamine (Adderall) include headache, nervousness, menstrual cramps, changes in libido (sex drive), nausea, diarrhea, constipation, abdominal pain, and weight loss.

More serious adverse reactions of both Provigil and Adderall include allergic reactions. You should seek emergency treatment if you develop signs and symptoms of a severe allergic reaction, such as skin rash, hives, itching, swelling of the head and neck, or difficulty breathing or swallowing. Also, seek immediate medical care if you have agitation, hallucinations, tics (involuntary movements), anxiety, depression, or suicidal thinking or behavior.

Warnings and Risks

The risks of taking modafinil (Provigil) include allergic reactions, psychiatric symptoms, danger while driving due to persistent sleepiness, and cardiovascular events such as chest pain and palpitations.

The risks of taking Adderall (dextroamphetamine and amphetamine) include stimulant abuse, misuse, and addiction, serotonin syndrome, worsening psychiatric symptoms, worsening tics or Tourette’s syndrome, seizures, Raynaud’s phenomenon, and suppression of growth in children with long-term use.

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Modafinil vs Adderall: Which is better for narcolepsy?

While both Provigil and Adderall (and other amphetamine stimulants) are CNS stimulants, there are differences in the way they work. Specifically, the CNS-activating effect of amphetamine is widespread. On the contrary, the CNS activation with modafinil occurs in specific brain regions; this mechanism explains the more specific wakefulness-promoting effect with modafinil, associated with less systemic (all-over-the-body) side effects than Adderall.

Modafinil (Provigil) or armodafinil (Nuvigil) is the first line of treatment for narcolepsy. Modafinil or armodafinil (Nuvigil) is usually the first go-to agent because it comes with a lower risk for misuse and dependence. In addition to narcolepsy and other sleep disorders, modafinil’s off-label uses include attention deficit hyperactivity disorder (ADHD), depression, and sleep deprivation.

Amphetamine-like stimulants are typically the second go-to agents due to their side effect profiles. Therefore, they are used for cases where modafinil is not effective. Examples include Adderall (mixed amphetamine salts) and methylphenidate (Ritalin).

Your primary care provider (PCP) can diagnose narcolepsy through a physical exam and health history. Your PCP may also ask you to keep a sleep journal for one to two weeks to track sleep times and symptoms.

Typically, people with excessive daytime sleepiness (the most obvious symptom of narcolepsy) are referred to a sleep medicine physician to conduct specialized tests to diagnose narcolepsy officially.

Learn more: “Narcolepsy Treatment: Modafinil Vs. Armodafinil”

Keep in mind that Provigil and Adderall are not magic pills that can completely cure narcolepsy. It takes a combination of medications and lifestyle modifications to achieve normal or near-normal functioning in people with narcolepsy.

Also, remember that these so-called “smart drugs” can increase wakefulness and the ability to focus and concentrate, but they come with serious health risks.

Your doctor will choose the best medication for narcolepsy based on many factors, including your health conditions, medication side effects, and drug interactions. For example, Provigil and Adderall can worsen symptoms of some medical conditions or adversely affect how other medications work.

While the mainstay for narcolepsy treatment usually involves Provigil (modafinil), Adderall (mixed amphetamine salts), and methylphenidate (Ritalin, Concerta, Metadate), there are other narcolepsy treatments such as sodium oxybate (Xyrem), atomoxetine (Strattera), or antidepressants such as venlafaxine (Effexor), fluoxetine (Prozac), or sertraline (Zoloft). Your sleep medicine physician will help you determine the treatment approach to treat your narcolepsy best.