Vigabatrin, also known as gamma-vinyl-GABA, is an antiepileptic drug that inhibits the breakdown of γ-aminobutyric acid (GABA) by acting as a suicide inhibitor of GABA transaminase (GABA-T). It is a structural analog of GABA, but does not bind to GABA receptors. Vigabatrin is an irreversible suicide inhibitor of gamma-aminobutyric acid transaminase (GABA-T), the enzyme responsible for the catabolism of GABA, which increases the level of GABA in the brain. Vigabatrin is a racemic compound, and its [S]-enantiomer is pharmacologically active.
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