I am a 44 year old female who was prescribed 20 mg of lisinipril two years ago for hypertension. My doctor recently doubled that dose to 40mg because of several high readings over a period of several months. I weigh 155 and moderately active, with good cholesterol of 70 and bad cholesterol of 144. My bp has been running 120/91 then 111/81 since I started the double dose a week ago. I m worried about my bp getting too low. What number should my bp start to be of concern and require another doctors visit? Are there any warning signs I should look for if that is starting to happen? I have an electronic cuff at home to monitor my bp as well. I also have allergies and asthma. I take 10 mg of singular, 180 mg of Allegra, 150mg Wellbutrin SR 2x daily, and albuterol as needed. I get regular check ups and blood work as well. Any information would be helpful. Thanks, Rhonda