Is 55 heart rate ok on metprolol 25mg 2 times a day internal med doc says it is im 29 years old on it for blood pressure and high pulse rate?

Yes it's ok . But more importantly why does a 29 yo otherwise healthy individual have high BP and heart rate. Before ascribing it to essential hypertension, secondary causes ought to have been excluded. Further, before medical therapy dispensed if deemed necessary, salt restriction, weight loss and other heart healthy lifestyle changes should be seriously tried for 6-9 months. Beta blocker might not be my 1st .