pentobarbital will decrease the level or effect of amiodarone samhälle affecting hepatic/intestinal enzyme CYP3A4 metabolism. Use Caution/Bildskärm.pentobarbital will decrease the level or effect of netupitant/palonosetron by affecting hepatic/intestinal enzyme CYP3A4 metabolism. Avoid or Use Alternate Drug. Netupitant stelnat vatten mainly metab