Designs for Health Histagest-DAO Tablets Douglas Labs This B vitamin-rich formula offers

This B vitamin-rich formula offers advanced support for the liver

and collagen synthesis

Ylang-Ylang and patchouli oils rouse the senses

Intended to boost the absorption and bioavailability of vitamin C

Designs for Health Histagest-DAO Tablets Douglas Labs This B vitamin-rich formula offersHistaGest DAO provides supplemental diamine oxidase (DAO), the enzyme responsible for breaking down food derived histamine, to help support normal and healthy histamine metabolism.* Histamine is a bioactive compound produced in the body in response to an injury or the presence of foreign substances and is present in all foods in the diet in various degrees. Some foods are known to be high in histamines, such as fermented foods and alcoholic beverages.