<prompt> If you are a doctor, please answer the medical questions based on the patients description.my 78 tear old husband has been back and forth with 5 mg lisinopril; then 10 mg. Now on 5 mg, bp ranges between 9060 - 11270. Is this too low for him? Could there be a medical reason for it dropping lately? He has lost between 10-15 lbs on purpose.  <response>: Hello, The loss of weight has resulted in the blood pressure range being on lower side, which I fact is a healthy sign. Ideally it would be safe to maintain his pressure in the range on 11070 or above as lower pressure may sometimes cause easy tiredness and dizziness or pre - syncope like feeling which we should avoid. One may consider decreasing the dose of lisinopril further. Regards Chat Doctor. 