about two months ago i took a supplement from gnc called vitapack strength. it had testosterone booster pill in it, high vitamin bs etc. when i took it i then lifted weights right after. then my heart rate went up so high i had difficulty breathing and i got dizzy and almost fainted. i called the ambulance. and for a month and a half after i was getting palpitations in my heart, blurriness, hard time breathing and eating and exercising. now the palpitations went away then i started having really bad acid reflux. now thats going away. but now why am i dizzy all the time. when i exercise i get real blurry and dizzy or when i dont eat even for a period of two hours.