Brand Names:
Ery-Tab, PCE Dispertab, Erythro-100


Drug Type: Antibiotic

Erythromycin (Erythro-100)


Erythromycin (Erythro-100) is a narrow-spectrum antibiotic used by veterinarians to treat very specific types of bacterial infections. The medication suppresses the protein synthesis and growth of bacteria cells, which eventually leads to the death of the bacteria.

Erythromycin is not an effective form of treatment against infections caused by parasites, fungi, or viruses. It is most commonly used for treatment of sinus, wound, skin, bone, and respiratory infections.

Drug form: Erythromycin can be compounded in oral suspension, tablets, capsules, ophthalmic solutions, and a range of other formulations.

Typical Dosage: 500 mg/gallon of drinking water (powder form). 1 ml/10 ml saline as nebulizer for 15 minutes.

Drug Storage: If the bird is prescribed the oral suspension formulation, the medicine must be stored in the refrigerator until right before giving it to the bird, after which it can be stored at room temperature for no more than 14 days.

Egg Withdrawal Period: In the United States, Ireland, United Kingdom, and Australia, erythromycin is approved for use in laying hens producing eggs intended for human consumption when its given in accordance with each product manufacturer's label directions; where it has a 0-day egg withdrawal period.

Caution: Poultry with existing liver or kidney disease, electrolyte imbalances, or heart rhythm disorders have an increased risk of the associated side effects of this medication.
  • Liver damage
  • Diarrhea
  • Severe skin reaction
  • Loss of appetite
  • cisapride
  • pimozide
  • ergotamine
  • dihydroergotamine
  • clindamycin
  • lincomycin
  • tylosin
  • azithromycin
  • chloramphenicol
  • theophylline
  • digoxin
  • rifampin: Will increase the effectiveness of Erythromycin