Inderal Oral

Inderal Oral Interactions

See also How to Use section.

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 very serious interactions may occur:

• thioridazine

If you are currently using this medication, tell your doctor or pharmacist before starting propranolol.

Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of:

• alpha blockers (e.g., prazosin)
• aluminum hydroxide
• anticholinergics (e.g., atropine, scopolamine)
• calcium channel blockers (e.g., diltiazem, verapamil)
• chlorpromazine
• diazepam
• drugs affecting liver enzymes that remove propranolol from your body (such as cimetidine, St. John's wort, certain SSRI antidepressants including fluoxetine/paroxetine/fluvoxamine, HIV protease inhibitors including ritonavir, rifamycins including rifabutin, certain anti-seizure medicines including carbamazepine)
• drugs to treat diabetes (e.g., insulin, sulfonylureas such as glipizide/glyburide)
• other drugs to treat high blood pressure (e.g., clonidine, hydralazine, methyldopa, reserpine)
• epinephrine
• haloperidol
• other heart medications (e.g., amiodarone, digoxin, disopyramide, propafenone, quinidine)
• MAO inhibitors (e.g., furazolidone, isocarboxazid, linezolid, moclobemide, phenelzine, procarbazine, rasagiline, selegiline, tranylcypromine)
• mefloquine
• rizatriptan
• theophylline
• thyroid hormones (e.g., levothyroxine)
• tricyclic antidepressants (e.g., amitriptyline)
• warfarin

Check the labels on all your medicines (e.g., cough-and-cold products, diet aids, nonsteroidal anti-inflammatory drugs-NSAIDs for pain/fever reduction) because they may contain ingredients that could increase your heart rate or blood pressure. Ask your pharmacist about using those products safely.