I am taking Concor 1.25mg beta blocker once a day for heart palpitations. My blood pressure was a bit high, but not extreme. I have been having heart palpitations off and on for about six months and started taking the Concor at the same time. Concor doesn t seem to be stopping the palpitations, they still happen but have stopped for months at a time. My question is, can I stop taking the Concor? The dosage is low, my bp isn t really high, and I think it is affecting my weight. I have gained ten kg since starting it and can t seem to lose it. Can i start taking half pill of the Concor? My doctor says it s safest to just keep taking it. I have been checked for heart disease and no problems were found.