Provigil is a prescription drug that is considered a treatment option for excessive sleepiness in adults due to narcolepsy, obstructive sleep apnea, or shift work sleep disorder. The Food and Drug Administration (FDA) approves the use of this drug under any of the conditions given above. It is available as Provigil 100 mg and Provigil 200 mg, both approved by the FDA. 

Provigil has a generic name, Modafinil, which is an active ingredient in this medication. Modafinil belongs to a class of drugs called stimulants, which work by altering natural chemicals in the brain called neurotransmitters that help you feel awake.

Is Provigil Safe?

Provigil is an oral tablet that is considered safe in most cases. However, there are some severe side effects noticed due to improper dosage and abuse of this medicine. Provigil is a controlled substance and is also classified as a schedule IV prescription medication. This indicates Provigil is accepted under some medical conditions, and there are some rules of prescription for this drug as it may cause psychological or physical dependence. Please buy Provigil online from a trusted and verified store.

How to use: 

The dosage of Provigil is crucial in any treatment. The initial dosage should always start with the lower dosage. For Provigil, there are only two doses generally available and also approved by the FDA i.e. Provigil 100 mg & Provigil 200 mg. 

How much Provigil can you take in 24 hours?

The maximum allowed dosage in 24 hours is 400 mg at the most crucial stages, as verified by a doctor. It is likely to start the dosage at 100 mg for treatment. If you and your doctor feel the lower dose is not effective, then the doctor may adjust the dosage after your feedback. Always be very sure about the dosage of Provigil from your doctor. The dosage of such medication may vary depending on various conditions. However, the approved dosages of Provigil for various conditions are given below.

Dosage for Shift Work Disorder (SWD)

The typical dosage of PROVIGIL for shift work disorder (SWD) is 200 mg orally once a day (single dose) in cases of excessive sleepiness, consumed 1 hour before the start of the work shift. 

Dosage for Obstructive Sleep Apnea (OSA) and Narcolepsy

The typical dosage of PROVIGIL for Obstructive Sleep Apnea (OSA) and Narcolepsy is the same for both conditions, the recommended dosage is 200 mg single dose once a day in the morning, and higher doses are often used up to 400 mg in the required cases the doctor prescribes.

However, there is no supporting evidence indicating the benefits of higher dosages.

People with liver problems or over 65 years of age may be prescribed a lower dosage.

Missed Dose: What if I miss a dose?

If you miss a dose of Provigil, you should better contact your doctor, asking whether to take the missed dose later or not. Your doctor will tell you, depending on the time and conditions, whether to take the missed dose or not. However, it is recommended to take the missed dose as soon as possible, which will keep you awake. 

But if it is too late, you should ask your healthcare provider about this. Never try to catch up on missed Provigil doses by taking two doses once at a time. This could result in very dangerous side effects.


In case of an overdose, seek immediate medical attention and call your healthcare provider right away. The symptoms of overdose include nausea, vomiting, hallucinations, increased blood pressure, chest pain, diarrhea, agitation, etc.

How do I take Provigil?


As discussed in dosage, Provigil should be taken before the time when you experience excessive sleepiness. 

In cases of sleep apnea or narcolepsy, it should be taken in the morning to prevent daytime sleepiness.

And for shift work sleep disorder, Provigil should be taken before your work shift.

Keep in mind that Provigil will work for hours to prevent sleepiness, making you feel awake, so you should not take it nearly at bedtime.

Can Provigil be crushed?

No, Provigil cannot be crushed or split. You should swallow this tablet. In case you are having trouble in swallowing the tablet, please ask your doctor or pharmacist to help you easily swallow the tablet

Can I take Provigil with or without food?

You can take Provigil with or without food. If this makes your stomach upset, you should ask your doctor, and they may adjust the dosage or ask you to take it with food, which reduces the effect of an upset stomach, and Provigil might take longer to start working.

Side effects

As a schedule IV drug, Provigil has various side effects. Common side effects include headache, dizziness, dry mouth, anxiety, trouble sleeping, nervousness, diarrhea, runny nose, etc.

In some cases, people also feel confusion, rapid heartbeat, vertigo, depression, constipation, tremor, etc.

Serious side effects

Serious side effects may have life-threatening issues. If you feel serious issues like an allergic reaction: (severe rash, trouble breathing or swallowing, swelling of the tongue and lips), heart effects: (chest pain, rapid heartbeat, palpitations, high blood pressure), mental health effects: (depression, anxiety, confusion, irritability), etc.

Please call the emergency helpline or 911 if you experience any severe side effects or feel that you need emergency medical treatment.

To learn more about Provigil, please visit us at https://medznow.com/adhd/provigil/. We also offer various medications that you can order online at the best prices and services.
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