I'am taking Toprol XL 50 MG along with Hyzaar 50-12.5 for about 4 months. 2 months ago I started to have many side effects including dizziness,tired all the time,weak feeling,muscles weakened especially in knees,feeling like falling.extreme blurred vision and dry cough. My blood pressure was being helped down from the 170/85 range to around 130/65 range. I stopped taking the toprol and in 4-5 days I was feeling much better but my blood pressure went sky high again. I started taking the toprol but my blood pressure wouldn't go down again. I think I would rather risk the high blood pressure rather then the side effects.