high blood pressure
"I have been on Metoprolol ER 25MG for 10 months.  It has worked great for my blood pressure and have had no migraines or headaches.  I do get really tired in the afternoon, which I never use to.  The worst part is I have gained 22 lb. and nothing I do reduces the weight.  I work out 4 times a week, really watch what I eat and nothing helps."