using these procedures in conjunction with various pharmacological treatments including the administration of tryptophan , 5-hydroxy-tryptophan , 5-ht , re-uptake blockers , synaptic releasers , synthesis blockers , receptor blockers and others it has been demonstrated that 5-ht manipulations give rise to a specific constellation of changes in feeding parameters .
C0041249
tryptophan
C0000578
5-hydroxy-tryptophan