high blood pressure
"I am a 50 year old fit, active and otherwise healthy female who is 5'6" and weights 140 pounds.  My doctor prescribed 25 mg of metoprolol for me and I started taking it in February of this year (2015).  My blood pressure was lowered from 140/90 to 125/82, so it DOES work in that respect.  I had no side effects at ALL from this until the first week of June.  Today is July 22nd.  The first week of June, I was recovering from a sore throat and cough and then three weeks later, I realized that I was STILL hoarse and my voice was cracking.  It is STILL like that as of today. Indeed, one of the rare side effects is hoarseness!  I called my doctor today and he switched me to Amlopidine."