Tylonsin Tylonic is veterinary medication which is used by adding it into feed for treatment of bacterial infections. It shows maximum activity against broad spectrum grams negative bacterial strains and exerts its effect by interfering with bacterial protein synthesis. This bactericidal agent is known to have chemical formula C46H77NO17 with molecular weight of 916.10 g/mol. Upon administration, it binds to 50S ribosomal subunit of bacteria and inhibits protein synthesis. Tylonsin Tylonic is injected via intramuscular route only by a trained professional.