I have been on Toprol XL 25mg for nine wks.. I have gained six pounds, I get very sleepy during the day to the point of having to lay down and take a nap that last for hrs. Cleaning and doing chores are now a challenge. I find myself just staring at nothing. I am very forgetful, very tired all the time. The worst side effect is I am always overly hot, I am always sweeting even when my body feel chilled inside, it is a weired feeling