Is Nitazoxanide Safe for Kids? A Parent’s Guide

Health Jun 5, 2025 35 Add to Reading List

As a parent, nothing is more worrying than watching your child suffer from an intestinal infection, especially when symptoms like diarrhea, stomach cramps, or vomiting disrupt their daily routine. One medication often prescribed in such cases is Nitazoxanide 500 mg— a powerful antiparasitic and antiviral drug. But is Nitazoxanide truly safe for children? In this parent-friendly guide, we’ll explore its safety, effectiveness, dosage, and what you need to know before giving it to your child.

What Is Nitazoxanide?

Nitazoxanide from dosephaermacy is a broad-spectrum antiparasitic and antiviral medication approved by the U.S. Food and Drug Administration (FDA). It is primarily used to treat diarrheal illnesses caused by parasites, including Giardia lamblia and Cryptosporidium parvum, especially in children and immunocompromised individuals.

In some countries, it is also used off-label for treating viral gastroenteritis, rotavirus, norovirus, and even investigated for influenza and COVID-19 due to its antiviral properties.

How Does Nitazoxanide Work?

Nitazoxanide works by inhibiting the energy metabolism of parasites, essentially starving them and preventing their growth and reproduction. It also has antiviral action by interfering with the maturation of viral proteins needed for the virus to multiply inside human cells.

This dual-action makes Nitazoxanide unique — it not only targets intestinal parasites but may also help manage certain viral infections.

Is Nitazoxanide Safe for Children?

Yes, Nitazoxanide is considered safe for children, especially when used according to a doctor’s guidance and approved dosing schedules. It is FDA-approved for use in:

Children aged 1 to 11 years (oral suspension)
Adolescents 12 years and older (tablet or suspension)

It has been clinically tested in pediatric populations, with studies showing good tolerance, few side effects, and strong efficacy in treating parasitic infections.

When Is Nitazoxanide Prescribed for Kids?

Doctors typically prescribe Nitazoxanide for children with:

Giardiasis (infection caused by Giardia lamblia)
Cryptosporidiosis (caused by Cryptosporidium parvum)
Viral diarrhea (off-label use)
Chronic or persistent diarrhea
Travel-related diarrhea

It is especially helpful in areas with limited sanitation or during outbreaks of waterborne illnesses.

Recommended Dosage for Children

Nitazoxanide comes in two primary forms: oral suspension (liquid) and tablets. For children, the liquid form is usually preferred.

Here’s a general dosing guide (always consult a pediatrician):

Age Group	Form	Dosage	Frequency	Duration
1–3 years	Suspension	100 mg	Twice daily	3 days
4–11 years	Suspension	200 mg	Twice daily	3 days
12+ years	Tablet or Suspension	500 mg	Twice daily	3 days

Common Side Effects in Children

While most children tolerate Nitazoxanide well, some may experience mild side effects, including:

Stomach pain
Nausea
Diarrhea
Headache
Vomiting
Discoloration of urine (yellow-green, harmless)

These effects are usually short-lived and resolve once the course is completed. If side effects are severe or persistent, contact your healthcare provider.

Warnings and Precautions

Although Nitazoxanide is safe for most children, here are a few precautions parents should consider:

✅ Consult the Doctor If:

Your child is under 1 year old
Your child has liver or kidney issues
There is a history of drug allergies
Your child is taking other prescription medications

Always disclose your child's full medical history and any supplements or over-the-counter medicines being used.

Can Nitazoxanide Be Given for Viral Infections?

Yes — although Nitazoxanide is officially approved for parasitic infections, many pediatricians use it off-label for:

Rotavirus
Norovirus
Adenovirus
Viral gastroenteritis

Some studies have shown that Nitazoxanide can reduce the duration and severity of viral diarrhea in children. However, more research is needed, and treatment decisions should always be made under medical supervision.

Tips for Giving Nitazoxanide to Children

Use the measuring device provided with the bottle for accurate dosing.
Give with food to minimize stomach upset.
Stick to the full 3-day course, even if symptoms improve early.
Store the oral suspension at room temperature (do not refrigerate).
Watch for improvement within 24–48 hours — consult the doctor if no progress.

What If a Dose Is Missed?

If you forget a dose, give it as soon as you remember. If it’s almost time for the next dose, skip the missed one — do not double up. Maintaining consistent dosing helps ensure effective treatment.

Is Nitazoxanide Available Over the Counter?

No. Nitazoxanide is a prescription-only medication in most countries. A pediatrician must assess your child’s symptoms, run tests (if needed), and prescribe the appropriate dose.

Alternatives to Nitazoxanide

If your child cannot take Nitazoxanide or has an allergy, your doctor may recommend alternatives such as:

Metronidazole
Albendazole
Tinidazole

Each has its own spectrum of activity and side effect profile, so never self-substitute without medical guidance.

Final Thoughts

Nitazoxanide is a safe and effective medication for children dealing with parasitic and some viral infections. It offers quick relief, is easy to administer, and has a well-established safety record when used properly.

For parents, it’s important to follow medical advice, administer the correct dose, and monitor for side effects. With timely treatment, your child can recover quickly and return to their normal routine with minimal disruption.