diarrhea, shortness of breath, In the MERIT-HF study comparing TOPROL-XL in daily doses Poor metabolizers and extensive metabolizers who concomitantly use CYP2D6 inhibiting drugs will have increased (several-fold) metoprolol blood levels, decreasing metoprolol's cardioselectivity In comparison to conventional metoprolol, the plasma metoprolol levels following administration of Toprol-XL are characterized by lower peaks, longer time to peak and significantly lower peak to trough variation. Patients were stabilized on optimal concomitant therapy for heart failure, including diuretics, ACE inhibitors, cardiac glycosides, and nitrates. 70347-200-03 Warn patients against interruption or discontinuation of therapy without the physician’s advice. rates.Most adverse reactions have been mild and transient. during post-approval use of TOPROL-XL or immediate-release metoprolol. 70347-100-03, This research was chosen and recognized on its … The adverse reaction information from clinical trials does, however, provide a basis for identifying the adverse events that appear to be related to drug use and for approximating rates.The table below lists adverse reactions in the MERIT-HF study that occurred at an incidence of ≥ 1% in the Toprol-XL group and greater than placebo by more than 0.5%, regardless of the assessment of causality.The following adverse reactions have been identified during post-approval use of Toprol-XL or immediate-release metoprolol. Common examples include oral and intravenous administration. TOPROL-XL is contraindicated in severe bradycardia, second or third degree heart block, cardiogenic shock, decompensated cardiac failure, sick sinus syndrome (unless a permanent pacemaker is in place), and in patients who are hypersensitive to any component of this product.Following abrupt cessation of therapy with certain beta-blocking agents, exacerbations of angina pectoris and, in some cases, myocardial infarction have occurred. up to 200 mg (mean dose 159 mg once-daily; n=1990) to placebo (n=2001), 10.3% Analyses of female and US patients were carried out because they each represented about 25% of the overall population. In this population, TOPROL-XL decreased the rate of mortality plus hospitalization, largely through a reduction in cardiovascular mortality and hospitalizations for heart failure.TOPROL-XL is an extended-release tablet intended for once daily administration. In controlled clinical trials, an immediate-release formulation of metoprolol has been shown to be an effective antianginal agent, reducing the number of angina attacks and increasing exercise tolerance. Metoprolol tartrate: Take with or immediately after meals. The peak plasma levels following once-daily administration of TOPROL-XL average one-fourth to one-half the peak plasma levels obtained following a corresponding dose of conventional metoprolol, administered once daily or in divided doses. Other reported clinical experience in hypertensive patients has not identified differences in responses between elderly and younger patients.Of the 1,990 patients with heart failure randomized to Toprol-XL in the MERIT-HF trial, 50% (990) were 65 years of age and older and 12% (238) were 75 years of age and older. Toprol XL usual adult dose is 100-450 mg daily in single or divided doses. It is advised to discuss the risks and benefits with the doctor before taking the injection. Oral Administration. that have been reported with other beta-adrenergic blocking agents and should At randomization, 41% of patients were NYHA Class II; 55% NYHA Class III; 65% of patients had heart failure attributed to ischemic heart disease; 44% had a history of hypertension; 25% had diabetes mellitus; 48% had a history of myocardial infarction. Therefore, initiate therapy at doses lower than those recommended for a given indication; and increase doses gradually in patients with impaired hepatic function.The systemic availability and half-life of metoprolol in patients with renal failure do not differ to a clinically significant degree from those in normal subjects. Titration may be needed in some patients.Toprol-XL tablets are scored and can be divided; however, do not crush or chew the whole or half tablet.Toprol-XL is not recommended in pediatric patients < 6 years of age Individualize the dosage of Toprol-XL. If you are a consumer or patient please visit Nevertheless, over the 24-hour dosing interval, βLong-term studies in animals have been conducted to evaluate the carcinogenic potential of metoprolol tartrate. Do not administer this injection yourself. TOPROL-XL, in dosages of 100 to 400 mg once daily, produces similar βBy blocking catecholamine-induced increases in heart rate, in velocity and extent of myocardial contraction, and in blood pressure, metoprolol reduces the oxygen requirements of the heart at any given level of effort, thus making it useful in the long-term management of angina pectoris. 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