How does Agar work?

Agar contains a gel-like substance, which bulks up in the gut and stimulates the intestines.

Are there safety concerns?

Agar seems safe for most adults when taken with at least one 8-ounce glass of water. If it is not taken with enough water, agar can swell and block the esophagus or bowel. Immediate medical attention is necessary if chest pain, vomiting, or difficulty swallowing or breathing occurs after taking agar. In some people, agar may also raise cholesterol.

Do not take agar if:
  • You are pregnant or breast-feeding.
  • You have a blockage in your bowel.
  • You have trouble swallowing.

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Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.