A GABA transaminase inhibitor is an enzyme inhibitor that acts upon GABA transaminase.
Phenylethylidenehydrazine (PEH) is an inhibitor of the enzyme GABA transaminase (GABA-T).
Sodium valproate is a weak blocker of sodium ion channels; it is also a weak inhibitor of enzymes that deactivate GABA such as GABA transaminase.
Its mechanism of action includes enhanced neurotransmission of GABA (by inhibiting GABA transaminase, which breaks down GABA).
GABA receptor | Alanine transaminase | GABA transaminase | (GABA) | Aspartate transaminase |