I am on atenolol for high BP . I have been noticing that get light headed when walking and diaphoretic. I thought my blood sugar was low but I didn’t think of my BP. Last night and this morning my BP has running mid 90/54. That’s is LOW for me. I will take it a few more days . If call the Dr she will make come in for office visit— it’s always high when I see the Dr . I hate going to the Dr !!