Broad-spectrum antibiotic activity and notable broad-spectrum antibiotics.
Broad-spectrum antibiotics are antibiotics that are active against many Gram-positive and Gram-negative bacteria. In contrast, narrow-spectrum antibiotics are only effective against Gram-positive or Gram-negative bacteria. Notable broad-spectrum antibiotics include ampicillin, ciprofloxacin, erythromycin, gentamicin, and streptomycin.
The following antibiotics are effective against Gram-positive and Gram-negative bacteria.