Is a blood pressure of 105/57 too low? i've been dizzy. my dr is having me break my dyazide pill in half and having me watch it for 1 week. i have lost 30 lbs. maybe i don't need a water pill anymore?

Congratulations. Losing weight. reducing salt intake and increasing K intake will lower BP. Perhaps. you no longer need BP meds. Discuss with your Dr about stopping or decreasing/stopping meds further. The best way to avoid the need for BP meds is to move to the DASH eating plan. Get this book. DASH Diet for Hypertension ISBN 9780743410076, Check BP every day as systolic will be down in week.

Blood pressure of 105/57 is not too low but your standing blood pressure is probably much lower than that when you change your position. Yes, you should hold Dyazide for 2 weeks than have your blood pressure checked again, both sitting and standing, goal is less than 130/80 for your age, continue to lower your weight more if you are still overweight with low salt and low calories diet and exercise