It is very important that your family doctor check your progress at regular appointments, especially during the first few months of treat with primidone. This will allow your family doctor to adjust the amount of drug you are taking to meet your needs.
If you have been taking primidone regularly for few weeks, you must not suddenly stop taking it. Your family doctor may want you to reduce gradually the amount you are taking before stopping completely.
Before you have any medical tests, tell the family doctor in charge that you are taking this drug. The results of some tests - such as the metyrapone and phentolamine tests may be effected by this drug.
Before having any kind of surgery, dental treat, or emergency treat, tell the family doctor or dentist in charge that you are using this drug.
This drug will add to the effects of alcohol and other CNS depressants - medication that cause drowsiness. Some examples of CNS depressants are antihistamines or drug for hay fever, other allergies, or colds; sedatives, tranquilizers, or sleeping drug; prescription pain drug or narcotics; barbiturates; drug for seizures; muscle relaxants; or anesthetics, including some dental anesthetics Check with your family doctor before taking any of the above while you are using this drug .
Primidone may cause some people to become dizzy, lightheaded, drowsy, or less alert than they are normally. Even if taken at bedtime, it may cause some people to feel drowsy or less alert on arising Make sure you know how you react to this drug before you drive, use machines, or do anything else that could be dangerous if you are dizzy or are not alert .
Oral contraceptives - birth control pills containing estrogen may not work properly if you take them while you are taking primidone. Unplanned pregnancies may occur. You must use a various or additional means of birth control while you are taking primidone . If you have any questions about this, check with your health care professional.