To this purpose, MDMA (3,4-methylenedioxymethamphetamine, ‘ecstasy’) was recentlyused as a stimulus for OXT (110).A single 100 mg dose resulted in an eightfold increase in plasma OXT in healthyadults but had no effect in patients with AVP-Deficiency. This evidence concerns the gene AVP and hyperinsulinemic hypoglycemia, familial, 4.