Metoprolol Succinate eq to Metoprolol Tartrate 50 mg (ER)

You should not use this medication if you are allergic to metoprolol, or other beta-blockers (atenolol, carvedilol, labetalol, metoprolol, nadolol, nebivolol, propranolol, sotalol, and others), or if you have:

a serious heart problem such as heart block, sick sinus syndrome, or slow heart rate;
severe circulation problems;
severe heart failure (that required you to be in the hospital); or
history of slow heart beats that have caused you to faint.
To make sure metoprolol is safe for you, tell your doctor if you have:

asthma, chronic obstructive pulmonary disease (COPD), sleep apnea, or other breathing disorder;
diabetes (taking metoprolol may make it harder for you to tell when you have low blood sugar);
liver disease;
congestive heart failure;
problems with circulation (such as Raynaud‚s syndrome);
a thyroid disorder; or
pheochromocytoma (tumor of the adrenal gland).
It is not known whether metoprolol will harm an unborn baby. Tell your doctor right away if you become pregnant while using this medicine.

Metoprolol can pass into breast milk and may harm a nursing baby. Tell your doctor if you are breast-feeding a baby.

Metoprolol is not approved for use by anyone younger than 18 years old.

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have :

• very slow heartbeats;
• a light-headed feeling, like you might pass out;
• shortness of breath (even with mild exertion), swelling, rapid weight gain; or
• cold feeling in your hands and feet.

Common side effects may include:

• dizziness, tired feeling;
• confusion, memory problems;
• nightmares, trouble sleeping;
• diarrhea; or
• mild itching or rash.