I Have High Blood Pressure Treated By Valsartan/HCTZ. HOWEVER For

I have high blood pressure treated by Valsartan/HCTZ. HOWEVER for over a year now I have had fainting spells at night. Symptoms: lightheadedness, dramatic shaking of my legs which eventually just collapse under me if I don't Go to me knees immediately. Strange thing is it only happens in the evening when I lie down to read or watch tv, then get back up to go do something. It rarely happens in the middle of the night and never during the daytime. Took my blood pressure couple of night ago immediately following incident and it was 69/53, pulse 112, coming down after I sat back down. Any suggestions?