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Treatments and drugs
By Mayo Clinic staffIf you have blastocystis without signs or symptoms, then you don't need treatment. Mild signs and symptoms may improve on their own within a few days.
Potential medications for treating blastocystis include the antibiotic metronidazole (Flagyl), the combination medication sulfamethoxazole and trimethoprim (Bactrim, Septra, others), and the antiprotozoal medication iodoquinol (Yodoxin, others). However, keep in mind that response to medication for B. hominis infection varies greatly from person to person. And, because the symptoms you're having might be unrelated to blastocystis, it's also possible that any improvement may be due to the medication's effect on another organism.
- Fact sheet: Blastocystis hominis infection. Centers for Disease Control and Prevention. http://www.cdc.gov/ncidod/dpd/parasites/blastocystishominis/factsht_blastocystis_hominis.htm. Accessed June 3, 2010.
- Ortega-Barria E. Blastocystis hominis. In: Long SS, et al., eds. Principles and Practice of Pediatric Infectious Diseases. 3rd ed. Philadelphia, Pa.: Churchill Livingstone Elsevier; 2008. http://www.mdconsult.com/das/book/body/203022604-3/1004582449/1679/264.html#4-u1.0-B978-0-443-06687-0..50263-0_4635. Accessed June 3, 2010.
- Leder K, et al. Blastocystis species. http://www.uptodate.com/home/index.html. Accessed June 3, 2010.
- Stensvold CR, et al. Eradication of blastocystis carriage with antimicrobials: Reality or delusion? Journal of Clinical Gastroenterology. 2010;44:85.
- Wanke CA. Travelers' diarrhea. http://www.uptodate.com/home/index.html. Accessed June 3, 2010.
- Wash your hands. Centers for Disease Control and Prevention. http://www.cdc.gov/Features/HandWashing/. Accessed June 3, 2010.
- Conner BA. Traveler's diarrhea. Centers for Disease Control and Prevention. http://wwwnc.cdc.gov/travel/yellowbook/2010/chapter-2/travelers-diarrhea.aspx. Accessed June 3, 2010.
- Oral rehydration solutions: Made at home. Rehydration Project. http://rehydrate.org/solutions/homemade.htm#recipes. Accessed June 3, 2010.
- NSF standards and certification. Water Quality Association. http://www.wqa.org/sitelogic.cfm?ID=1897. Accessed June 22, 2010.
- Anderson CF (expert opinion). Mayo Clinic, Rochester, Minn. June 10, 2010.
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