Yes, there are some medicines you may want to take with caution if you are also taking beta blockers. When taking beta blockers with other medicines, your doctor may keep a close watch on you. This list does not include all the medicines that should be taken with caution when mixed with beta blockers. So, talk to your doctor or pharmacist about all the medicines you take.
Some medicines to avoid or take with caution when taking a beta blocker are:
CYP2D6 enzyme inhibitors. These medicines may raise the level of beta blockers in your blood. This may make you feel dizzy. Most people are usually fine taking them together. But let your doctor know at once if you feel new symptoms. Some CYP2D6 inhibitors are antidepressants, antipsychotics, antiarrhythmics, antiretrovirals, antihistamines, antimalarials, antifungals, and medications for stomach ulcers.
Calcium channel blockers (CCBs). Taking beta blockers with certain CCBs may slow your heart rate. It may also drop your blood pressure too much or disturb your heart rhythm. The types of CCBs that may have this effect are verapamil and diltiazem. Some patients may need this combination of medicine. But use with extra caution.
Digitalis glycosides. Taking beta blockers with digitalis glycosides raises your digoxin levels. This can raise the risk of your heart rate becoming too slow.
Certain antiarrhythmics. Antiarrhythmics include amiodarone and disopyramide. Taking them while on beta blockers may increase beta blocker levels. This can cause your heart rate to become too slow.
Insulin or oral blood sugar-lowering medicines. Using insulin and beta blockers together can lower your blood sugar levels too much. It can also hide low blood sugar symptoms. Make sure to closely watch your blood sugar levels.
Rifampin. Taking rifampin with beta blockers can decrease beta blocker levels. This can make your medicine less useful.
Cyclosporine. Taking carvedilol with cyclosporine can increase your cyclosporine levels. Your doctor may have you lower your cyclosporine dose a little bit.
This list does not include all the medicines that should be taken with caution when mixed with beta blockers. So, talk to your doctor or pharmacist about all the medicines you take.
Keep yourself safe – tell your doctor what you take!