About nitazoxanide
Antiprotozoal and antiparasitic
Used for
- Treats diarrhea caused by Giardia lamblia or Cryptosporidium parvum.
- Used for adults and children aged at least one year.
Usual adult dose
For Giardia or Cryptosporidium diarrhea: 500 mg by mouth every 12 hours with food for 3 days.
Usual dose in children
Ages 1–3 years: 100 mg every 12 hours with food for 3 days. Ages 4–11: 200 mg every 12 hours for 3 days. Under 1 year: not established.
Common side effects
- Abdominal pain
- Nausea
- Headache
- Yellowish urine or eye discoloration
Important warnings
- Take with food; suspension should be prepared and measured as directed.
- Safety and effectiveness are not established in children under 1 year.
- Use caution in people with liver or kidney impairment; evidence is limited.
- Persistent diarrhea or dehydration may require medical assessment.
Pregnancy
Human pregnancy data are limited; use only when a clinician determines it is needed.
Breastfeeding
It is unknown whether nitazoxanide passes into breast milk; consult a clinician about use.
Interactions
- Warfarin: nitazoxanide may increase warfarin exposure and affect clotting.
- Highly protein-bound medicines with a narrow safety range may interact; monitoring may be needed.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.