Before starting treatment with Coreg, precautions and warnings for the drug should be fully understood. Several side effects may occur with the medicine, including extreme low blood pressure, slow heart rate, or low blood sugar. Coreg precautions and warnings also extend to people who have serious liver disease, asthma or other breathing problems, sick sinus syndrome, or certain types of irregular heart rhythms.
Tell your healthcare provider about all other medicines that you are currently taking, including prescription and non-prescription medicines, antacids, vitamins, and herbal supplements.