Dificid should be used only to treat infections that are proven or strongly suspected to be caused by:

a. Staphylococcus aureus
b. Streptococcus pyogenes
c. Escherichia coli
d. Haemophilus influenzae
e. Clostridium difficile

Answer: (e).

The active ingredient found in Dificid is Fidaxomicin. It is a macrolide antibacterial drug for oral administration. Dificid is a macrolide antibacterial medicine indicated in adults and pediatric patients aged 6 months and older for treatment of Clostridium difficile-associated diarrhea (CDAD).

The recommended adult dose is one 200 mg Dificid tablet orally twice daily for 10 days with or without food. It is available as tablet and oral suspension dosage form.

Anemia, neutropenia, nausea, vomiting and abdominal pain are commonly reported side effects of Dificid.