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ZypAdhera® (olanzapine pamoate): Half-life and Elimination
The half-life of olanzapine after olanzapine pamoate is 30 days compared to 30 hours following oral administration. the absorption and elimination are complete approximately six to eight months after the last injection.
a single intramuscular injection with olanzapine pamoate, the slow
dissolution of the olanzapine pamoate salt in muscle tissue begins
immediately and provides a slow continuous release of olanzapine for
more than four weeks.1
release becomes diminishingly smaller within eight to twelve weeks.1
absorption and elimination are complete approximately six to eight
months after the last injection.1
combination of the release profile and the dosage regimen
(intramuscular injection every two or four weeks) result in sustained
olanzapine plasma concentrations. Plasma concentrations remain
measurable for several months after each olanzapine pamoate
plasma clearance after oral olanzapine is lower in females (18.9
l/hr) versus males (27.3 l/hr), and in non-smokers (18.6 l/hr) versus
smokers (27.7 l/hr). Similar pharmacokinetic differences between
males and females and smokers and non-smokers were observed in
olanzapine pamoate clinical trials. However, the magnitude of the
impact of gender, or smoking on olanzapine clearance is small in
comparison to the overall variability between individuals.1
full information please refer to summary of product characteristics.
ZypAdhera [summary of product characteristics]. Eli Lilly Nederland
B.V., The Netherlands.
Date of Last Review:April 12, 2021
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