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Drug Profile

Valbenazine for the treatment of tardive dyskinesia

Pages 1135-1144 | Received 26 Jul 2017, Accepted 27 Sep 2017, Published online: 12 Oct 2017
 

ABSTRACT

Introduction: Chronic intake of typical neuroleptics or centrally acting dopamine receptor blocking antiemetics may cause onset of tardive syndromes. Various types exist. One of them is tardive dyskinesia, characterised by often stigmatising, purposeless, rapid, repetitive, stereotypic, involuntary movements of face, limbs or trunk. Effective symptomatic drug treatment options beyond application of tetrabenazine are rare. Tetrabenazine is usually administered three times daily due to the short half life of this agent.

Areas covered: This narrative review discusses the value of valbenazine for the treatment of tardive dyskinesia as a therapeutic alternative to tetrabenazine.

Expert commentary: Valbenazine is a selective inhibitor of vesicular monoamine transporter 2, which is metabolized to (+)-alpha-dihydrotetrabenazine. Valbenazine and particularly its metabolite inhibit vesicular monoamine transporter 2 function. Once daily intake of valbenazine ameliorated the severity of tardive dyskinesia. The chiral purity of valbenazine circumvents generation of the (-)alpha and (+) and (-)beta dihydrotetrabenazine metabolites of tetrabenazine or deutetrabenazine. Valbenazine and its metabolite do not antagonize postsynaptic monoamine receptors in contrast to the tetrabenazine formulations. Therefore one may hypothesize that fewer and less severe motor and psychopathological side effects will occur during valbenazine long term application compared with tetrabenazine or deutretrabenazine.

Declaration of interest

The authors have no relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.

Additional information

Funding

This paper was not funded.

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