Blood tests may be needed to check for any unwanted effects. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. Liver diseasePrimidone may make these conditions worse. The following information includes only the average doses of this medicine. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them: Other side effects not listed may also occur in some patients. This medicine may be used with other seizure medicines. Check with your doctor immediately if any of the following side effects occur: Get emergency help immediately if any of the following symptoms of overdose occur: Some side effects may occur that usually do not need medical attention. Ask your healthcare professional how you should dispose of any medicine you do not use. For this medicine, the following should be considered: Tell your doctor if you have ever had any unusual or allergic reaction to this medicine or any other medicines. Make sure you tell your doctor if you have any other medical problems, especially: Take this medicine only as directed by your doctor. No information is available on the relationship of age to the effects of primidone in geriatric patients. Using this medicine with any of the following may cause an increased risk of certain side effects but may be unavoidable in some cases. Along with its needed effects, a medicine may cause some unwanted effects. https://www.mayoclinic.org/drugs-supplements/primidone-oral-route/side-effects/drg-20065638, Advertising and sponsorship opportunities. This is a decision you and your doctor will make. Although not all of these side effects may occur, if they do occur they may need medical attention. Children up to 8 years of ageAt first, 50 mg once a day at bedtime. Certain medicines should not be used at or around the time of eating food or eating certain types of food since interactions may occur. These side effects may go away during treatment as your body adjusts to the medicine. Using this medicine while you are pregnant can harm your unborn baby. There are no adequate studies in women for determining infant risk when using this medication during breastfeeding. Mayo Clinic is a nonprofit organization and proceeds from Web advertising help support our mission. This medicine will add to the effects of alcohol and other CNS depressants (medicines that make you drowsy or less alert). For non-prescription products, read the label or package ingredients carefully. A single copy of these materials may be reprinted for noncommercial personal use only.
1998-2022 Mayo Foundation for Medical Education and Research (MFMER). Follow your doctor's orders or the directions on the label. Weigh the potential benefits against the potential risks before taking this medication while breastfeeding. If used together, your doctor may change the dose or how often you use this medicine, or give you special instructions about the use of food, alcohol, or tobacco. If your dose is different, do not change it unless your doctor tells you to do so. Using this medicine with any of the following medicines may cause an increased risk of certain side effects, but using both drugs may be the best treatment for you. Your doctor may want you to gradually reduce the amount you are taking before stopping completely. Oral contraceptives (birth control pills) containing estrogen may not work properly if you take them while you are taking primidone. Keep from freezing. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes. Take primidone everyday in regularly spaced doses as ordered by your doctor. Use an effective form of birth control to keep from getting pregnant. Unplanned pregnancies may occur. This will provide the proper amount of medicine needed to prevent seizures. Mayo Clinic does not endorse any of the third party products and services advertised. Primidone may cause some people to become dizzy, lightheaded, drowsy, or less alert than they are normally. All rights reserved. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive. Using this medicine with any of the following medicines is not recommended. If you have been taking primidone regularly for several weeks, you should not suddenly stop taking it without first checking with your doctor. This medicine is available only with your doctor's prescription. However, if it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Your doctor may increase your dose if needed. Keep using all of your seizure medicines unless your doctor tells you to stop. Do not take more of it, do not take it more often, and do not take it for a longer time than your doctor ordered. If you notice any other effects, check with your healthcare professional. Asthma, emphysema, or chronic lung diseasePrimidone may cause serious problems in breathing. Copyright 2022 IBM Watson Health. Portions of this document last updated: June 01, 2022, Original article: https://www.mayoclinic.org/drugs-supplements/primidone-oral-route/side-effects/drg-20065638. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. You may report side effects to the FDA at 1-800-FDA-1088. In these cases, your doctor may want to change the dose, or other precautions may be necessary. This medicine is an anticonvulsant that works in the brain tissue to stop seizures. This medicine may cause some people to be agitated, irritable, or display other abnormal behaviors. It may also cause some people to have suicidal thoughts and tendencies or to become more depressed. Using this medicine with any of the following medicines is usually not recommended, but may be required in some cases. Before you have any medical tests, tell the medical doctor in charge that you are taking this medicine. The amount of medicine that you take depends on the strength of the medicine. It is very important that your doctor check your progress at regular visits while you are using this medicine to see if it is working properly and to allow for a change in the dose. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. If both medicines are prescribed together, your doctor may change the dose or how often you use one or both of the medicines. Although certain medicines should not be used together at all, in other cases two different medicines may be used together even if an interaction might occur. Also tell your health care professional if you have any other types of allergies, such as to foods, dyes, preservatives, or animals. For oral dosage forms (chewable tablets, suspension, or tablets): Adults, teenagers, and children 8 years of age or olderAt first, 100 or 125 milligrams (mg) once a day at bedtime. This product is available in the following dosage forms: In deciding to use a medicine, the risks of taking the medicine must be weighed against the good it will do. unsteadiness, trembling, or other problems with muscle control or coordination, Unusual excitement or restlessness (especially in children and in the elderly), sores, ulcers, or white spots on the lips or in the mouth, continuous, uncontrolled rolling eye movements, feeling of constant movement of self or surroundings. The results of some tests (such as the metyrapone and phentolamine tests) may be affected by this medicine. All rights reserved. If you miss a dose of this medicine, take it as soon as possible. The dose of this medicine will be different for different patients. Some examples of CNS depressants are antihistamines or medicine for allergies or colds; sedatives, tranquilizers, or sleeping medicine; prescription pain medicine or narcotics; medicine for seizures or barbiturates; muscle relaxants; or anesthetics, including some dental anesthetics. Primidone is used alone or in combination with other medicines, to control seizures (convulsions) in the treatment of epilepsy. Check with your doctor before taking any of the above while you are using this medicine. Drug information provided by: IBM Micromedex. Unusual excitement or restlessness may occur in elderly patients, who are usually more sensitive than younger adults to these effects of primidone. Do not double doses. Do not keep outdated medicine or medicine no longer needed. If you, your child, or your caregiver notice any of these side effects, tell your doctor or your child's doctor right away. Your doctor may increase your dose if needed. Call your doctor for medical advice about side effects. You should use a different or additional means of birth control while you are taking primidone. Even if taken at bedtime, it may cause some people to feel drowsy or less alert on arising. Using alcohol or tobacco with certain medicines may also cause interactions to occur. Your doctor may want you to join a pregnancy registry for patients taking a seizure medicine. Also, the number of doses you take each day, the time allowed between doses, and the length of time you take the medicine depend on the medical problem for which you are using the medicine. If you think you have become pregnant while using the medicine, tell your doctor right away. However, the dose is usually not more than 2000 mg a day. If you have any questions about this, check with your doctor. When you are taking this medicine, it is especially important that your healthcare professional know if you are taking any of the medicines listed below. Before having any kind of surgery, dental treatment, or emergency treatment, tell the medical doctor or dentist in charge that you are using this medicine. Appropriate studies performed to date have not demonstrated pediatric-specific problems that would limit the usefulness of primidone in children. The presence of other medical problems may affect the use of this medicine. Your doctor may decide not to treat you with this medication or change some of the other medicines you take. Store the medicine in a closed container at room temperature, away from heat, moisture, and direct light. Make sure you know how you react to this medicine before you drive, use machines, or do anything else that could be dangerous if you are dizzy or not alert. Porphyria (an enzyme problem)Should not be used in patients with this condition. The following interactions have been selected on the basis of their potential significance and are not necessarily all-inclusive.
