Most people who take Tegretol don't have too much trouble with side effects. That's one of the reasons it's used so much. The most common complaints (usually not too severe) are:

• dizziness
• sleepiness
• unsteadiness
• upset stomach
• blurred or double vision
• headache

If you notice any of these problems, call the doctor. Sometimes the doctor can help by changing the amount or type of Tegretol prescribed. No one should stop taking Tegretol or change the amount they take without their doctor's guidance.

People who have just started taking Tegretol (or who have just started taking a larger amount) should be careful during activities that might be dangerous, until they know whether they are having any side effects.

Allergic reactions
About 5% to 10% of people who take Tegretol have a red rash within in the first month of taking it. If this happens, tell the doctor or nurse, to be sure that it's not the beginning of a serious problem.