Lopressor SR is in a group of drugs called beta-blockers. Lopressor SR (Metoprolol Tartrate) is used to affect the blood flow through arteries and veins in order to treat angina and hypertension. It’s also used to lower the risk of death or hospitalization for heart failure. It works by blocking certain chemicals in the body, such as epinephrine. The usual recommended start dose is 100 mg.
The brand Lopressor SR comes from Turkey and is manufactured by AstraZeneca and the generic Metoprolol Tartrate is currently from Sandoz in Canada. It may come from other international countries. Lopressor SR is available in a 100 mg and 200 mg strengths.
Get medical help immediately if you have any of these signs of an allergic reaction while taking Metoprolol Tartrate.
• Difficulty breathing;
• Swelling of your face, lips, tongue or throat
Stop taking Lopressor SR and call your doctor at once if you have one of these serious side effects:
• Very slow heartbeat;
• Lightheadedness or feeling like you might pass out;
• Shortness of breath (even with mild exertion);
• Rapid weight gain or swelling;
• Cold feeling in your hands or feet
Less serious side effects of Metoprolol Tartrate may include dizziness, tiredness, depression, confusion, memory problems, nightmares, insomnia, diarrhea, mild itching or rash.
This is not a complete list of side effects and others may occur. Please call your doctor if you have any further concerns or questions.
Lopressor SR should be taken as prescribed by your doctor. Talk to your doctor about your medical history to be sure you can safely take Lopressor SR. Particularly if you have a history of asthma or COPD, sleep apnea, diabetes, liver disease, congestive heart failure, circulation problems, thyroid disorder, tumor of the adrenal gland, etc. Do not use this medication if you have a serious heart problem, serious circulation problem, severe heart failure, or a history of slow heartbeats. It is not known how this medication will harm an unborn baby. The benefit of treating high blood pressure may outweigh any risks to the baby, so talk to your doctor. Lopressor SR can pass into breastmilk and cause dry skin, dry mouth, diarrhea, constipation, or slow heartbeats in your baby. There may be an interaction between Lopressor SR and other medications such as other heart or blood pressure medications, epinephrine, antidepressants, ergot medicines, MAO inhibitors, etc. If you are taking any of these medications, speak to your doctor.