There are two categories of antibiotics that can be given to dogs: bacteriostatic (stops the growth and reproduction of bacteria, but does not kill them) and bactericidal (completely destroys bacteria).
The most commonly prescribed drugs for dogs are the cephalosporin or penicillin class: gentamicin, amoxicillin, sulfametox, or cephalexin. The most common choice is amoxicillin, which has fewer side effects and helps with a wide range of canine health problems:
Gastrointestinal and respiratory infections;
Infections affecting the urinary tract, etc.
Gentamicin is prescribed for open, infected wounds, ear and eye infections. The medicine is produced in the form of an ointment or spray; it is not recommended to give tablets to animals.