Toprol-XL and lack of sleep

I have only been taking Toprol xl 50mg. for a few days, but i notice a difference already. (I take this to block migraines.) I feel out of it when i take this drug. I cannot sleep anymore! i cant fall asleep... and when i finally do, i am up a few hours later. I have been having weird dreams. (not about spiders, but other vivid, crazy dreams) Do you get used to the drug after a while and are able to sleep???? anyone know?? I have problems with anxiety and depression... and i think that lack of sleep would only add to that. I know that since i started taking toprol, i have mood swings like crazy. I will be happy and having a good time, then i will just switch and starting going off the handle. (about the littlest things too) So i ask, why do we take these drugs if we cant sleep, eat, think, have mood swings, etc???

I'm a 43 y/o male, on Toprol-Xl (25mg) and Diovan(80-mg) for high blood pressure. I've been on Diovan since it hit the market (no side effects at all) but recently developed a fast heart rate with no explaination. I saw a cardiologist and he put me on 25mg of Toprol-XL once each day.It's been 7 weeks and I'm fairly well adjusted with few minor side effects (slow pulse, cold extremities, weird chest feelings when the Toprol starts to wear off) and a major side effect (lack of sleep and weird dreams).

I read an article that Toprol-XL is time released and the medication has it's peak affect 8-hours after taking the dose. I was taking the medication with dinner, but would then wake up at 3:00 am, wide awake, couldn't fall back to sleep. I now take the medication with lunch and my sleep patterns have improved considerably. My incredibly, sometimes scary, dreams have tapered off too. My blood pressure is picture perfect (usually 115-125 over 70 to 80) and the bursts of rapid heartbeats have stopped altogether (I had an echo stress test, echocardiogram, blood work, 3 EKG's) and all were normal. My cardiologist said all my side effects are normal and that if i couldn't tolerate them he would switch my beta blocker.

I have been taking Toprol XL for over two years and my depression is worsening by the month. I am diabetic.