<s>[INST] I am 76, ht 5ft 5 in, weight 150 lbs.  I take Diovan 80 once a day.  Lately I feel very tired in the PM and started monitoring my BP.  Today i took one-half of my pill and now, at 1:30 my BP is 108/83 , pulse 59.  Should I be worried?  Should I contact my Dr.? [/INST] hiyou were on a dose of 80mg valsartan  and you were feeling weekeven on halving the tablet your blood pressure is still on the lower sidewhile taking any hypertensive medication you should keep a record of your blood pressure every  week and should visit your doctor every two months,because on the basis of  the blood pressure records doctor is going to taper the dose of the blood pressure medicine you are onas of now your weekness  is mostlikely because of the overdose of diovanso  make the doses half and check your bp twice a day and try to taper it to a dose where your bp is 120/80 .yes you can plan a visit to doctor </s>