Prevention and Treatment of Diarrhea Caused by Cryptosporidium parvum and Giardia lamblia.

Please note: Alinia® is not approved to treat other possible symptoms of Cryptosporidiosis and/or Giardiasis (such as cramps, dehydration, nausea, fever, vomiting). It also is not approved to prevent the spread of infection.

Cryptosporidiosis and Giardiasis Prevention9,10

One of the simplest and most effective ways to prevent infection is to always wash your hands thoroughly with water and soap for at least 20 seconds.

Washing your hands is especially helpful before eating food and after using the toilet or changing a diaper. Also, wash your hands after gardening, since these parasites can be found in soil.

Crypto has a high tolerance to chlorine and can survive in chlorinated pool water for extended periods. Therefore, do not swallow the water if you are bathing at a recreational facility, including swimming pools. Lakes and rivers can also be contaminated with Crypto and Giardia.

Treatment of Diarrhea caused by Crypto and Giardia

Prescription drugs such as Alinia are available to treat the diarrhea caused by Crypto and Giardia. Alinia is the only drug approved by the FDA to treat diarrhea caused by Crypto. Alinia should be taken as prescribed by a healthcare provider.†

If you experience diarrhea and think you may have encountered Crypto or Giardia, you should contact your doctor.

Talk to your doctor to see if Alinia is right for you. Please see the Full Prescribing Information for more information.

See Full Prescribing Information for full Dosing and Administration instructions.

9 Cryptosporidium – Prevention & Control – General Public. Centers for Disease Control and Prevention. Accessed May 11, 2017.
10 Giardia – Prevention & Control – General Public.” Centers for Disease Control and Prevention. Accessed May 11, 2017.


ALINIA® for Oral Suspension (patients 1 year of age and older) and ALINIA Tablets (patients 12 years and older) are indicated for the treatment of diarrhea caused by Giardia lamblia or Cryptosporidium parvum.
Limitations of Use: ALINIA for Oral Suspension and ALINIA Tablets have not been shown to be effective for the treatment of diarrhea caused by Cryptosporidium parvum in HIV-infected or immunodeficient patients.

Important Safety Information regarding ALINIA:

  • Do NOT take ALINIA Tablets or ALINIA for Oral Suspension if you are allergic to nitazoxanide or any other ingredient in the formulations.
  • ALINIA Tablets or ALINIA for Oral Suspension should be taken with food.
  • ALINIA Tablets should NOT be taken by children 11 years or younger.
  • ALINIA tablets and ALINIA for Oral Suspension should be taken with food.
  • Please discuss with your doctor if you:
    • have hepatic, biliary, or renal disease.
    • are taking any other medications (for example, warfarin).
    • are a pregnant or a nursing woman.
    • are 65 years of age and older.
    • are HIV infected or have an immune disease (such as AIDS).
  • The most common side effects reported for ALINIA Tablets and ALINIA for Oral Suspension during clinical trials were abdominal pain, headache, chromaturia and nausea.

*For more information, please read the Full Prescribing Information.

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit, or call 1-800-FDA-1088, or contact Romark at 1-813-282-8544.

Alinia is a registered trademark of Romark, L.C.

Intended only for residents of the United States of America. ©2021 Romark, L.C., Tampa, Florida 33607-8416

The information contained in this website is provided for educational purposes only and is not intended to replace discussions with a healthcare provider. Alinia is not right for everyone. Decisions regarding healthcare must be made with a healthcare provider, considering the unique characteristics of the patient.