You should not use this medication if you are allergic to metoprolol, or if you have a serious heart problem such as heart block, sick sinus syndrome, or slow heart rate.
Before taking metoprolol, tell your doctor if you have pheochromocytoma, circulation problems, congestive heart failure, asthma or other breathing problems, diabetes, low blood pressure, depression, liver or kidney disease, a thyroid disorder, or myasthenia gravis.
Metoprolol can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.
Avoid drinking alcohol, which could increase drowsiness and dizziness while you are taking metoprolol.
Do not stop taking metoprolol without first talking to your doctor. Stopping suddenly may make your condition worse.
If you need to have any type of surgery, you may need to temporarily stop using metoprolol. Be sure the surgeon knows ahead of time that you are using metoprolol.
Metoprolol is only part of a complete program of treatment for hypertension that may also include diet, exercise, and weight control. Follow your diet, medication, and exercise routines very closely if you are being treated for hypertension.
Hypertension often has no symptoms, so you may not even feel that you have high blood pressure. Continue using this medicine as directed, even if you feel well. You may need to use blood pressure medication for the rest of your life.