Yes: All medications have potential side effects. A beta blocker may cause a low blood pressure, which could cause lightheadedness or dizziness. A dose that is too strong can also cause excessive slowing of your heart rate, which will cause similar symptoms. Fatigue may also be caused by this type of med. A beta blocker may also worsen an underlying breathing condition, making you short of breath.
Answered 8/25/2014
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