Chitosan

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Related Topics

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• Chitosan for Weight Control

Chitosan is a polysaccharide found in the shells of crustaceans.

Where is it found?

Chitosan is extracted from the shells of crustaceans, such as shrimp and crab.

Health Concerns

Chitosan has been used in connection with the following conditions (refer to the individual health concern for complete information):

Rating	Health Concerns
	Weight loss
	High cholesterol Kidney failure
Reliable and relatively consistent scientific data showing a substantial health benefit. Contradictory, insufficient, or preliminary studies suggesting a health benefit or minimal health benefit. An herb is primarily supported by traditional use, or the herb or supplement has little scientific support and/or minimal health benefit.

Deficiency Symptoms

Who is likely to be deficient?

Chitosan is not an essential nutrient, so deficiencies do not occur.

Dosage

How much is usually taken?

Most human research has used 3-6 grams per day with meals.

Side Effects

Are there any side effects or interactions?

While no long-term studies of the effects of chitosan on human health have been done, animal studies suggest that this compound could inhibit the absorption of minerals and fat-soluble vitamins. Adverse effects on the growth of children and on the outcome of pregnancy are also possible.¹ In addition, although chitosan-included alterations in intestinal flora are believed to be beneficial, the possibility that these changes may have negative long-term consequences has not been ruled out. People with intestinal malabsorption syndromes should not use chitosan.

At the time of writing, there were no well-known drug interactions with chitosan.

References

1. Koide SS. Chitin-chitosan: properties, benefits and risks. Nutr Res 1998;18:1091-101 [review].

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Last Review: 01-21-2009

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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires February 2010.

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