You should not use this medicine if you have had an allergic reaction to any type of beta blocker medicine (such as atenolol, metoprolol, propranolol, Corgard®, Inderal®, Lopressor®, Toprol®, Tenormin®), or if you have asthma, or certain heart problems. Talk with your doctor about what these heart problems are.
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Some drugs should not be taken together because they can interact. A drug interaction may cause mild to very serious medical problems. It can also make one of the drugs not work properly or make it too strong.
There are many drugs that can interact with sotalol. This especially includes medicines for asthma, chest pain (angina), diabetes, or high blood pressure, or epinephrine to treat severe allergic reactions. Tell your doctor if you are using any of these medicines, or if you are using other medicines to treat your irregular heartbeat.
If you use an antacid, take it 2 hours before or 2 hours after taking sotalol.