C. diff Risk


Oral Bioavailability


Approximate Cost

>$4/day (Oral)

Spectrum Of Activity


10 mg/kg/dose IV/PO once daily for 5 days

General Information

Drug Monitoring

An association between orally administered azithromycin with infantile hypertrophic pyloric stenosis (IHPS) has been reported in infants younger than 1 month.

However, azithromycin is still the drug of choice for treatment or prophylaxis of pertussis if the risk of developing severe pertussis outweighs the potential risk of IHPS.

Oral Liquids

Concentration: 40 mg/mL

Taste: Bitter taste

Not all strengths of oral liquids are listed nor be available on the CHEO Formulary

Tablet/Capsule Strengths

  • 250 mg

  • 600 mg

Tablets or capsules are preferred especially over an unpleasant tasting oral liquid.

Not all strengths of oral tablets/capsules are listed and they are not all available on the CHEO Formulary.