Provigil is a medication used to treat sleep disorders such as sleep apnea and narcolepsy. It changes chemicals in the brain to promote wakefulness. Because this drug affects the central nervous system, it is important to be aware of the side effects.

Headaches

The most common side effect of Provigil are headaches. About 34 percent of the people taking Provigil experience headaches from time to time.

Common Side Effects

Nausea and nervousness are two of the other most common side effects. Many people also experience dizziness, diarrhea, upset stomachs, runny nose or back pain. Although these side effects are common, you should inform your doctor if they persist or become bothersome.

Serious Side Effects

Some of the more severe side effects that can occur while taking Provigil include anxiety, depression, confusion and hallucinations. Some people have also experienced chest pains, high blood pressure, trouble breathing and blood in the urine. It you experience any of these side effects, they should be reported immediately to your doctor.

Allergic Reactions

If you are allergic to modafinil or armodafanil, you should not be taking Provigil. Some of the allergic reactions people experience from taking Provigil include rashes, hives, itching, swelling of the mouth and difficulty breathing. Stop taking Provigil and seek medical attention immediately if you experience an allergic reaction.

Unreported Side Effects

It is important to remember that while there are many side effects of Provigil, not everyone experiences them. There may also be some side effects that have not been discovered. If you experience a side effect that has not been reported, you should tell your doctor and you may report the side effect to the FDA.

Source:

Drug Information Online: Provigil Side Effects

eMedTV: Provigil Side Effects