DRUG INTERACTIONS: Your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.This drug should not be used with the following medication because a very serious interaction may occur: nisoldipine.If you are currently using this medication, tell your doctor or pharmacist before starting ethotoin.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: blood thinners (e.g., warfarin), drugs that can cause low blood counts (e.g., cancer chemotherapy), other anti-seizure medications (e.g., phenytoin, valproate).This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Discuss with your doctor or pharmacist if you should use additional reliable birth control methods while using this medication. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well.Ethotoin is very similar to phenytoin. Many medications interact with phenytoin. It is not known whether the same drugs interact with ethotoin. However, it is very important to tell all your doctors and pharmacists of all the medications you use, including ethotoin.Also report the use of drugs which might increase seizure risk such as isoniazid (INH), phenothiazines (e.g., thioridazine), theophylline, or tricyclic antidepressants (e.g., imipramine), among others. Consult your doctor or pharmacist for details.Tell your doctor or pharmacist if you also take drugs that cause drowsiness such as: certain antihistamines (e.g., diphenhydramine), anti-seizure drugs (e.g., carbamazepine), medicine for sleep or anxiety (e.g., alprazolam, diazepam, zolpidem), muscle relaxants, narcotic pain relievers (e.g., codeine), psychiatric medicines (e.g., chlorpromazine, risperidone, amitriptyline, trazodone).Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain drowsiness-causing ingredients. Ask your pharmacist about using those products safely.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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