The teachings provided herein generally relate to formulations, systems, and methods that have the ability to remit deficiencies and imbalances in a subject's serotonin and dopamine levels. The teachings relate to the preparation and uses of a formulation comprising a serotonergic agent or dopaminergic agent in a form capable of oral transmucosal delivery to a subject. The formulation includes a flavoring agent and a carrier base. The flavoring agent functions as a taste indicator of the endpoint of a taste titration of the serotonergic or dopaminergic agent for a subject receiving an oral administration of the formulation in the form of a taste titration, and the endpoint is indicated to the subject by a change in the intensity of the flavor of the flavoring agent.