betaine
be·ta·ine
noun \ˈbēt-ə-ˌēn\Definition of BETAINE
: a sweet crystalline quaternary ammonium salt C5H11NO2 that was first isolated in beet juice and is used to treat homocystinuria and is also used in the form of its hydrochloride C5H11NO2·HCl as a source of hydrochloric acid especially to treat hypochlorhydria
