Lactoferrin, a specific iron-binding peptide extracted from bovine colostrum.

This is the isolated peptide rather than whole colostrum, which is the distinction a practitioner is making when they specify it. Extraction and purification are the hard part, and they are what you are paying for.

A single active in a hypoallergenic capsule. Allergy Research Group has made supplements this way for more than 45 years.

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