Toprol-XL and post nasal drip

Back in July I was experiencing rapid heart beats and shortness of breath. I'm a 43 white female with a high stress job. I went to the doctor expecting him to prescribe a sedative. He hooked me up to an EKG which showed I had a left bundle branch block. He then ordered blood work, chest x-rays, an ultra sound, and a nuclear stress test. All test came back fine, but my stress test showed a heart attack, which apparently is common with the left bundle block. I then wore a 24 hour Holter moniter which indicated tachycardia. That's when the doctor prescribed 50 mg Metoprolol. My BP and heart rate are now almost normal and the shortness of breath has gone away. I still experience a mild heaviness in my chest, but that is only when I allow my self to be stressed. I have gained over 5 pounds in less than 2 months and my dreams are more vivid than usual. One side effect that was listed on my drug info sheet that I haven't read about on this site described a cough, which I have had for over a month. I mentioned the cough to my doctor and he said it was prob post nasal drip so he prescribed 180 mg Fexofenadine and told me to cut the Metoprolol in half so I would be taking 25 mg. The Fexofenadine has helped with sneezing that I have always experienced, but the cough is still there. The cough is not always severe, but it has interrupted my sleep twice and my job once. The last bad coughing episode lasted 90 mins during the night. Has anyone else experienced the coughing side effect of Metoprolol?

I am taking a Metoprolol called Betaloc which I think is the same basically as Toprol. I have post-nasal drip and a slight cough, occassional sore throats,nasty taste in mouth, bad sleeping pattern (poor night every few days but drop asleep during day) and a bit tired generally. However my irregular heartbets are gone... I plan to reduce the dosage and see what happens. It is essential to know what the side effects are of different medicines; then we can stop thinking we have some other problems and weigh up the pros and cons of continuing to take the tablets!
The nasal drip is annoying, for example, but hardly serious.

I was prescribed Toprol xl once a day for high bp. My bp is high in the dr's office (165/108) but when I check it at home it is usually under 130/85. Since I am taking this medication I am constantly clearing my throat and have a slight cough. I had a cold when I started taking toprol but that was about 3 weeks ago and all other symptoms of the cold are gone. Does anyone else have this feeling of a post nasal drip and slight cough. It is extremely annoying an I am thinking of stopping the medication to see if this feeling goes away. I also have vivid dreams and feel very tired. Does this feeling go away. I just don't have the energy I used to have.