Mandates symptoms and conditions

I have been taking lotrel 10/20 for approx. 3 months. I now have an uncontrollable cough, insomnia multiple times during the night,constantly waking to urinate. My doctor has prescribed an inhaler and also increased the meds to 10/40 due to my BP being140/96, he has even placed me on a lasix. I am often tired after working 12-17 hrs, this due to the mandates of the JOB, or is it "THE LOTREL". I was on Hazar but the cost was astronomical even with health coverage. Walmart ($8) but not woth the side effects, I'm requesting the Hazar or just go to the V.A.