Medically reviewed by Femi Aremu, PharmD Metoprolol is a beta-blocker approved by the Food and Drug Administration (FDA) to treat several cardiovascular conditions, including high blood pressure, ...

Following informed consent, patients were randomized (in strata according to time of onset, diabetes status, sex, and age) to the treatment arm (up to three 5-mg boluses of metoprolol tartrate at ...