I am a 52 yr. old over weight female. I have been on lisinopril for high blood pressure and toprol for palpitations for about 5 months. Everything has been going great. Both meds. are working. Question is this: I got sick this past monday went to the doc today found out i have the flu. I have a fever about 101 headache, aches chills, wheezing and not feeling well. Doc said lungs are clear. Anyway, I take my blood pressure daily and as soon as I got sick I noticed that it has been on the low side all the time. Sometimes 92/59 others 106/66 (not bad). Does being sick cause your blood pressure to drop. I have no symptoms of low blood pressure. Other than the flu I feel fine. It is just weird. It has not gone over 110/70 since i have been sick and usually alot lower.