Antitoxins are effective against a variety of bacterial toxins. Some notable examples include: - Diphtheria Toxin: Neutralized by diphtheria antitoxin. - Tetanus Toxin: Countered by tetanus antitoxin. - Botulinum Toxin: Treated with botulinum antitoxin. These antitoxins have saved countless lives by neutralizing toxins that could otherwise lead to severe illness or death.