Use a salt substitute that contains potassium and be sure to eat banana's, oranges or tomatoes every day to help keep your potassium level up. Also be sure they check your potassium level about every 6 months to be sure that it is ok. The potassium level is the one that will be depeleted for you the most due to your BP medication. Your other electrolytes should be fine if drink pleny of water to rehydrate yourself after working out. Gatorade is a fine drink but don't depend on it to replace enough potassium to keep your levels up.