Is there a difference between anti-anxiety and anti-depression drugs?
[Basic]


Receptor: a molecule in a cell membrane that responds specifically to a neurotransmitter, hormone, antigen or other substance.
Agonist: Substance which initiates a physiological response when combined with a receptor.
Antagonist: Substance which inhibits the physiological response when combined with a receptor.
Allosteric: Substance which alters the activity of an enzyme by means of a conformational change induced by a different molecule.


[Response]


GABA receptors are related with anxiety [1]. Anxiety occurs because of low concentration of GABA in the brain. Therefore, Chordiazepoxide is an allosteric agonist.
Dopamine receptors are related with depression [2]. Depression occurs because of low concentration of Dopamine in the brain. Therefore, Phenelzine is a non-selective and irreversible monoamine oxidase inhibitor, which means that the brain does not recycle/degrade the monoamine neurotransmitters (Which dopamine is one of them).