Generic name: Erythromycin with benzoyl peroxide.

Benzamycin is a combination antibiotic and antibacterial. It interferes with the production of certain biochemicals necessary for bacteria to sustain life. 

Quick Facts About Benzamycin


Used to treat acne.

Benzamycin Dosage

Apply to affected areas after thoroughly washing, rinsing with warm water, and drying gently.

  • Usual adult dose: apply 2 times per day to affected areas, in the morning and evening.
  • Usual child dose: not generally prescribed for children under age 12.
  • Missed dose: apply as soon as possible, unless almost time for next dose. In that case, do not take missed dose; go back to regular schedule.

Benzamycin Side Effects

Overdose symptoms:

no information available. If you suspect an overdose, immediately seek medical attention.

More common side effects: abnormal redness of the skin, dryness, itching.

No known less common or rare Benzamycin side effects.


Inform your doctor before combining Benzamycin with:

any other prescription or over-the-counter acne remedy.

No known food/other substance interactions.

Special Cautions

If pregnant or planning to become pregnant, inform your doctor immediately. Not known if Benzamycin appears in breast milk.

No special precautions apply to seniors.

Not generally prescribed for children.

  • Should not use if sensitive to ingredients of this drug; inform your doctor of any allergic reactions. Use with caution, may bleach hair or colored fabric.
  • Monitor for any increased resistance of bacteria.

Note: provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Benzamycin side effects, please contact your healthcare provider.