Allicin is the flagship formula of Dr.Zhang’s protocols. It is a molecule derived from garlic (Allium sativum L.) with a wide range of immune supportive benefits. In the early 1990s, Dr.Zhang discovered that Allitridi, Allicin's precursor, is a much more chemically stable compound and metabolizes into Allicin once it enters the gastrointestinal system. Therefore, Allitridi is the key to maximizing the immune supportive effects of Allicin.*