Medically reviewed by Jessica Swirble, PharmD
Last updated on 5/1/2024

Drug Information | Side Effects | Use & Dosage | Request a Prescription

Erythromycin is available in various forms:

• Oral tablets (250 mg)
  
• Oral capsules (250 mg, 333 mg, 400 mg, 500 mg)
  
• Oral suspension (200 mg/5 ml, 400 mg/5 ml)
  
• Topical formulations (2% gel or solution)
  
  

The typical starting dose of erythromycin can vary depending on the type and severity of the infection, the age of the patient, and other medical considerations. It is important to strictly follow your healthcare provider's instructions regarding dosage and administration.

For adults with mild to moderate infections treated orally, the typical starting doses may be:

• 400-800 mg every 6 to 12 hours or as prescribed by your doctor.
  
  

For children, the typical starting doses may be based on weight and age, usually ranging from:

• 30 to 50 mg/kg/day divided into 4 doses.
  
  

For topical erythromycin used to treat acne or skin infections, the typical starting dose may involve applying a thin layer of the cream, gel, or ointment to the affected area once or twice daily.

Your healthcare provider will evaluate your medical condition, allergies, and other medications you may be taking to determine the most appropriate dose and formulation for you.

Erythromycin should be taken or applied exactly as directed by your healthcare provider. Do not exceed the recommended dose or duration of treatment without consulting your doctor.

If you have any questions about your dosage, contact your healthcare provider. If you want to talk to a provider right away, book an online doctor appointment on Sesame to discuss your concerns.

If you miss a dose, take it as soon as you remember it. If it's almost time for another dose of erythromycin, skip the missed dose and take your next dose as scheduled. Do not take or apply a double dose of erythromycin.

Do not discontinue or alter your erythromycin dosage without consulting with your healthcare provider. Follow your healthcare provider's instructions regarding dosing and other recommendations for taking erythromycin.

Store erythromycin as directed by your healthcare provider or pharmacist. Proper storage is essential to maintain the medication's effectiveness. Erythromycin should be stored at room temperature, away from excessive heat, light, and moisture.

Keep the medication out of the reach of children and ensure that the container is tightly closed.