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 them first.
See also the How to Use section.
This drug should not be used with the following medications because very serious interactions may occur: fluvoxamine, sodium oxybate.
If you are currently using any of these medications, tell your doctor or pharmacist before starting diazepam.
Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: antacids, certain anti-depressants (e.g., fluoxetine, nefazodone), cimetidine, clozapine, digoxin, disulfiram, kava, levodopa, omeprazole.
Tell your doctor or pharmacist if you also take drugs that cause drowsiness such as: antihistamines that cause drowsiness (e.g., diphenhydramine), anti-seizure drugs (e.g., carbamazepine), medicine for sleep (e.g., sedatives), muscle relaxants, narcotic pain relievers (e.g., codeine), psychiatric medicines (e.g., phenothiazines such as chlorpromazine, or tricyclics such as amitriptyline), tranquilizers.
Check the labels on all your medicines (e.g., cough-and-cold products) because they may contain drowsiness-causing ingredients. Ask your pharmacist about the safe use of those products.
This product can affect the results of certain lab tests. Make sure laboratory personnel and your doctors know you use this drug.
Smoking can decrease the effectiveness of this drug (through liver enzyme induction). Tell your doctor if you smoke or if you have recently stopped smoking because your dose may need to be adjusted.
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.