Active Ingredient

Armodafinil

Armodafinil is a medication used to promote wakefulness in adults. It is often prescribed for conditions that cause excessive sleepiness.

This medication helps people stay alert and maintain focus during the day.

Written By Douglas C. Goldberg, MD

Reviewed By Philip Schein, MD

Last Updated 28 Nov 2025

Available Armodafinil Brands

Waklert

Strengths 150 mg

Armod

Strengths 50 mg, 150 mg

Artvigil

Strengths 150 mg

Armodafinil is commonly used to treat sleep-related disorders. It helps manage symptoms of excessive daytime sleepiness.

Armodafinil works by affecting certain substances in the brain that control the sleep-wake cycle.

It increases the release of neurotransmitters like dopamine, which helps improve alertness and reduce sleepiness.

This action supports staying awake during the day and maintaining normal sleep patterns at night.

Not everyone experiences side effects, and many are mild and temporary. However, it’s important to be aware of them.

If you experience serious or persistent side effects, contact your healthcare provider.

Monitor your symptoms and report any unusual changes to your doctor.
Avoid consuming large amounts of alcohol while taking this medication.
Do not drive or operate heavy machinery if you feel dizzy or drowsy.
Inform your doctor about all other medications you are taking to avoid interactions.
Do not use Armodafinil if you have a history of heart problems without consulting a doctor.

Always consult your doctor for personalized medical advice.

What is Armodafinil used for?

Armodafinil is used to treat excessive sleepiness caused by conditions like narcolepsy, obstructive sleep apnea, and shift work sleep disorder.

How long does it take for Armodafinil to work?

Armodafinil typically starts working within a few hours after taking it. However, the exact time can vary between individuals.

How long do the effects of Armodafinil last?

The effects of Armodafinil can last for several hours, helping you stay awake and alert during the day.

Is Armodafinil safe to use every day?

Armodafinil is generally safe when used as prescribed by your doctor. Always follow your healthcare provider’s instructions.

Can I take Armodafinil with other medications?

It’s important to inform your doctor about all medications you are taking, as Armodafinil can interact with other drugs.