cysteamine ( beta-mercaptoethylamine , mea ) is a naturally occurring sulfhydryl compound that depletes pituitary prl , causes a reduction in brain and gut somatostatin ( srif ) , and suppresses norepinephrine ( ne ) and epinephrine ( epi ) synthesis by inhibition of dopamine-beta-hydroxylase ( dbh ) .
C0028351
norepinephrine
C0014563
epinephrine