A broad-spectrum therapeutic or broad-spectrum antibiotics is a type of antimicrobial active against multiple types of pathogens, such as an antibiotic that is effective against both bacteria and viruses. The opposite of a broad-spectrum drug is a narrow-spectrum therapeutic, which only treats a specific or very similar set of pathogens. Such therapeutics have been suggested as potential emergency treatments for pandemics. See also Broad-spectrum antibiotic Broad-spectrum antiviral drug References Drugs