Pentobarbital will decrease the level or effect of vinblastine by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Minor/Significance Unknown. pentobarbital will decrease the level or effect of buspirone by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Monitor. pentobarbital will decrease the level or effect of cevimeline by affecting hepatic/intestinal enzy... https://cristianxofvm.scrappingwiki.com/1701851/niet_bekend_factual_statements_about_natriumpentobarbitalpoeder_kopen_nederland