Health Care Daosin 10 units. DAOSiN is a dietary food for special medical purposes, which acts as a food supplement in the treatment of food histaminosis caused by a deficiency of the enzyme DAO or DiAminoOxidasa. Taking one capsule before each meal Daosín increases the amount of DAO, and therefore the ability to degrade histamine ingested. for more information: info@farmacia-internacional.net