The fitfth day on Lisnopril, after a good night's sleep, I becam...

The fitfth day on Lisnopril, after a good night's sleep, I became so sleepy about an hour after breakfast, couldn't keep my eyes open. (Took a half hour nap). Early evening I became dizzy, chest pain, I thought I was going to pass out. (I was out for a social evening of cards) Next day, I took 1/2 the dosage....I seemed to be okay. Five days later, I started sweating, chest pain, pressure dropped very low. I stopped taking Lisinopril, still don't feel up to par. I was on Univasc, that worked well for me, however, the new Medicare Drug program didn't pay for the drug and my doctor didn't want to spend time to ask my insurance to make Univasc a "preferrred" drug for me and so he prescribed Lisinopril...WHAT A NIGHT MARE!!! . I will be seeking another professional opinion!