TOPROL-XL administered once a day, and immediate-release metoprolol administered once to four times a day, provided comparable total beta 1 -blockade over 24 hours (area under the beta 1 -blockade versus time curve) in the dose range 100-400 mg.
Antimicrobial: A drug used to treat a microbial infection. Antimicrobial is a general term that refers to a group of drugs that includes antibiotics, antifungals, antiprotozoals, and antivirals.
An antibiotic - (Greek anti, against and bio life) is any substance produced by a microorganism which can kill or inhibit the growth of a different microorganism. We now call such substances, and any similarly-acting substances which humans design, chemotherapeutic agents.