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Source Naturals Wellness Transfer Factor is a technologically advanced approach to immune system integrity. Transfer Factor is a highly purified constituent of bovine colostrum. Transfer factors are chemical messengers that enhance immune system response. This ability respond can be transferred from one organism to another, and from one species to another. Contains no yeast, egg, gluten, soy, wheat, sugar, salt, preservatives or artificial color, flavor or fragrance.
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🇺🇸 Ship from USA · On Agora since 2026
$18.59