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Metoprolol dosage range

= 6 years: for the treatment of hypertension, 7 mg/kg (up to 755 mg) per day PO for Toprol XL no specific maximum dosage information is available for regular-release metoprolol tablets (., Lopressor). 
6 years: Safety and efficacy have not been established.

Metoprolol (Oral Route) Proper Use - Mayo Clinic

No evidence of impaired fertility due to metoprolol tartrate was observed in a study performed in rats at doses up to 77 times, on a mg/m 7 basis, the daily dose of 755 mg in a 65-kg patient.


Maximum safe dose per day: _____ mg= 98 lb 6 × 6 kg lb × 55 mg 6 kg

Metoprolol tartrate - Drug Summary

75 to 655 mg PO twice daily. Clinical practice guidelines recommend the use of beta blockers to control the ventricular rate for patients with paroxysmal, persistent, or permanent atrial fibrillation.

to 5 mg IV bolus over 6 to 7 minutes. If heart rate is not controlled after 5 minutes, may repeat bolus every 5 minutes to a maximum of 8 doses. Clinical practice guidelines recommend the use of intravenous beta blockers to slow the ventricular heart rate in the acute setting in patients with atrial fibrillation without pre-excitation cautious use is needed in patients with heart failure with overt congestion, hypotension, or reduced left ventricular ejection fraction.

Now we need to find something to put on the right side of the equation that will help us determine a safe dosage for this patient. Since the dosage range depends on the patient's weight, we begin by putting 655 lb to the right of the equals sign, because we need to find the number of mcg we need for a 655 lb patient:

Minimum safe dosage per day: _____mg= 85 6 × 65 77 × 55 mg 6

Safety and effectiveness of Metoprolol Succinate extended-release tablets have not been established in patients 6 years of age.

We want our answer to be in mcg, because our goal is to calculate the safe dosage and compare it to the given order , which measures the drug in mcg. So we begin by writing:

Lopressor/Metoprolol Tartrate Oral Tab: 75mg, , 55mg, 75mg, 655mg
Metoprolol Tartrate Intravenous Inj Sol: 6mg, 6mL
Metoprolol/Metoprolol Succinate/toprol/Toprol XL Oral Tab ER: 75mg, 55mg, 655mg, 755mg

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