alot of times a ace inhibitor will cause this..message me i can explain it in detail..also list what 3 meds hes on..i was on 3 but 1 now...
If he is having trouble with his speech I would certainly bring this to his doctor's attention immediately. I am on 3 different meds for blood pressure, heart rhythm, and heart rate and I haven't had anything other than drowsiness and thinning hair. Has he been tested for other things also? He isn't diabetic is he? Dizziness is possible, but the trouble with his speech needs the doctor's evaluatioin.
I take 3 meds for high blood pressure and am age 60. I have been on them for a long time, unlike your Dad. My body has adjusted to them overtime, so I am thinking your Dad will adjust to them. Some blood pressure meds can make you dizzy when you first start taking them. I bet they gave your Dad a beta blocker which is very good for blood pressure, but initially they can make you a little dizzy and light headed. You state that it is usually 6 to7 hours after taking the pills that he starts to have symptoms. That will more than likely improve with time. Just check with the Dr. if things don't improve. Best of luck.
it may takes weeks for the body adjust, the meds could be causing the dizziness but id go back to the doctor dizziness means that his bp may be too low