question: I have been diagnosed with high blood pressure, and am currently taking Metopropol (after a few years taking Atenolol). I exercise regularly (walk approx 4 miles a day (approx 4.0 mph) sometime in our neighborhood with steep hills). Since beginning blood pressure medication, I have been experiencing a lot of light-headedness, dizziness, and weakness. I passed out once, and have been very careful since then. I had a headache last night that kept me awake most of the night, and when I got up, I felt like passing out. For a couple hours, I would exert myself at all, I had to lean over to keep from fainting. It was definitely worse when I would climb stairs. I ate breakfast (a vegetable and fruit smoothy), drank lemon water, and a couple other glasses of water, and after taking a 45-minute nap, I feel better, but I still feel faint - even when walking across the room. This light-headedness began when I started taking blood-pressure medicine, and I have assumed that is why the symptoms have continued.