Lopressor, metoprolol tartrate USP, is a selective beta1-adrenoreceptor blocking agent, available in 5-mL ampuls for intravenous administration. Each ampul contains a sterile solution of. Begin treatment in this early phase with the intravenous administration of three bolus injections of 5 mg of Metoprolol tartrate each; give the injections at approximately 2-minute intervals. Begin treatment in this early phase with the intravenous administration of three bolus injections of 5 mg of Metoprolol tartrate each; give the injections at approximately 2-minute intervals. For acute situations requiring IV metoprolol, administer 5 mg as a slow IV bolus over 1-2 minutes, which can be repeated every 5 minutes up to a maximum tota. Metoprolol Tartrate Injection, USP, is a selective beta 1-adrenoreceptor blocking agent, available in 5 mL vials for intravenous administration. Each vial contains a sterile solution of metoprolol tartrate, 5 mg, and sodium chloride, 45 mg, and water for injection. REMEMBER: Chronic oral metoprolol succinate is indicated in stable heart failure — but IV metoprolol in acute decompensated HF can be fatal. Know the difference: one is a long-term treatment for stable disease, the other is a medication that can crash an acutely failing heart. It is given to people who have already had a heart attack. This medicine is a beta-blocker. It works by affecting the response to nerve impulses in certain parts of the body, like the heart. As a result, the heart beats slower and decreases the blood pressure. IV metoprolol should be administered in 5-mg increments by slow intravenous administration (5 mg over 1 to 2 minutes), repeated every 5 minutes for a total i. Metoprolol tartrate injection is a beta-adrenergic receptor inhibitor indicated for the treatment of definite or suspected acute myocardial infarction in hemodynamically stable patients to reduce cardiovascular mortality when used in conjunction with oral metoprolol maintenance therapy (1). Get clear safety guidance for Metoprolol (Intravenous), including warnings, precautions, when to seek medical assistance, and how to use it correctly.