Metoprolol - Toprol XL is a universally acceptable drug however as it is a known factor with each and ever drug and new users there have been a certain number of side effects that have come about as a result of prior research and also excessive testing of Toprol XL. There have been lists of effects that the drug known to have on people who use it these may be first time users or even prolonged users of this drug the side effects still remain.

The more known and commonly occurring side effects are known to be such as frequent vomiting, some people who have been taking Metoprolol - Toprol XL for a long time have reported that this drug has also caused them to sometimes suffer with fever, and also sometimes experience problems while sleeping and waking up. Some patients have reported excessive strokes of insomnia and other have reported a decrease in their sex drive after the use of Metoprolol. Still others have gone on to describe that they have at certain points experienced sudden and partial impotence due to the use of this drug. On the other hand there is a more serious array of side effects that has been reported and it is suggested that if any of these side effects were to occur then the use of this drug is to be stopped. The rare and more serious drug side effects are swelling in the face, throat, feet and even the ankles severe pain without any cause, difficulty while excreting, and loss of appetite.