I was recently diagnosed with High blood Pressure and was given metoprolol 25mg and i know its a low dose but it makes me feel so drowsy and tired all day not to mention i cant sleep at night i was wondering if anyone else has experienced these side effects and does it go away. I forgot to mention I don't have any heart problems or anything of that sort the only issue was i went to the er and that's where they diagnosed me with high blood pressure but whatever medicine they gave me my heart started to beat fast so they decided to give me metoprolol instead?