Under behandling med olanzapin sammen med lithium eller valproat forekom en stigning på ≥7% af baseline legemsvægt hos 17, 4% af patienterne ved akut behandling (op til 6 uger).
During treatment with olanzapine in combination with lithium or divalproex, an increase of  7% from baseline body weight occurred in 17.4% of patients during acute treatment (up to 6 weeks).