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Lopressor is a prescription beta-adrenergic blocker containing metoprolol tartrate. Current U.S. 50 mg and 100 mg tablet labeling includes hypertension, angina pectoris, and myocardial infarction. A separate current 12.5 mg Lopressor tablet label covers treatment of hemodynamically stable adults with myocardial infarction to reduce cardiovascular mortality.
read more about lopressor ...Metoprolol preferentially blocks beta-1 adrenergic receptors in the heart. This slows heart rate, reduces cardiac contractility, and decreases the effects of sympathetic stimulation. Beta-1 selectivity is not absolute, and beta-2 receptor blockade can occur at higher concentrations.
Lopressor is used in adults with hypertension, chronic angina pectoris, or myocardial infarction under the relevant tablet labeling. Patients with severe bradycardia, certain heart conduction disorders, cardiogenic shock, or decompensated heart failure should not receive Lopressor. Patients with bronchospastic disease require particular caution.
The current 50 mg and 100 mg tablet labeling starts hypertension treatment at 100 mg daily in one or divided doses and angina treatment at 100 mg daily in two divided doses. For myocardial infarction, treatment in hemodynamically stable adults can begin with 50 mg every six hours for 48 hours, followed by a maintenance regimen of up to 100 mg twice daily. Dosing is individualized according to blood pressure, heart rate, and tolerability.
Abrupt discontinuation can worsen myocardial ischemia, trigger angina, or contribute to myocardial infarction. Other serious concerns include bradycardia, heart block, low blood pressure, worsening heart failure, bronchospasm, and masking of hypoglycemia symptoms. Long-term treatment is generally withdrawn gradually over one to two weeks under medical supervision.
Lopressor contains metoprolol tartrate, a beta-1 selective adrenergic blocker.
Current 50 mg and 100 mg tablet labeling includes hypertension, angina, and myocardial infarction.
The usual starting dose under the 50 mg and 100 mg tablet label is 100 mg daily in one or divided doses.
No. Abrupt discontinuation can worsen heart-related symptoms and increase the risk of serious cardiac complications.
DailyMed - LOPRESSOR (metoprolol tartrate) tablet. https://www.dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=0283bc9d-6998-493a-824a-d4c85f704111. Date Accessed October 13, 2026.
Metoprolol. Drugs and Lactation Database (LactMed). https://www.ncbi.nlm.nih.gov/books/NBK501156/. Date Accessed October 13, 2026.
Metoprolol. MedlinePlus. https://www.medlineplus.gov/druginfo/meds/a682864.html. Date Accessed October 13, 2026.
Metoprolol. PubChem. https://pubchem.ncbi.nlm.nih.gov/compound/Metoprolol. Date Accessed October 13, 2026.
Metoprolol. StatPearls. https://www.ncbi.nlm.nih.gov/books/NBK532923/. Date Accessed October 13, 2026.