Combining-Valproic acid-Ziprasidone
From Psychiatrienet
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Adding ziprasidone to valproic acid.
General information- Valproic acid is principally metabolized by CYP2C9, CYP2C19, CYP2A6 and UDP-glucuronosyltransferases. Valproic acid is an inhibitor of the enzymes CYP2C9, epoxide-hydroxylase and UDP-glucuronosyltransferases.
- Ziprasidone is metabolized by CYP1A2 (minor) and CYP3A4.
Start ziprasidone- Start ziprasidone according to the general dosing advice.
Cave- Central nervous system- and/or respiratory-depressant effects may be additively or synergistically increased in patients taking multiple drugs that cause these effects, especially in elderly or debilitated patients.[4]
- Antipsychotics lower the seizure threshold and may antagonise the anticonvulsant effect of valproate. [5]
- ↑ Farmacotherapeutisch Kompas; Toxicologie (dutch)
- ↑ Farmacotherapeutisch Kompas - valproinezuur (dutch)
- ↑ KNMP; Informatorium Medicamentorum 2023; Monografie "valproaat" (Dutch)
- ↑ Interactions between aripiprazole and valproic acid on drugs.com
- ↑ Bazire S, Psychotropic Drug Directory 2007, HealthComm UK Limited, Aberdeen, 2007.
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