A member asked:

What is the half-life of olanzapine? is a half-life the time it takes for half of the medicine to leave the body?

4 doctors weighed in across 2 answers
Dr. Mark Fisher answered

Specializes in Neurology

What's the question?: Is it, what does "half-life" mean? If so, then this isn't just about olanzapine. Elimination time of any drug that follows first-order kinetics is measured in half-lives. (Well, you asked.) This is part of any drug's "pharmacokinetics." I won't waste space trying to explain that to you here. A web search for "pharmacokinetics" will bring up lots of sources so you can learn at your level.

Answered 8/8/2017

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Dr. James Schlichting answered

Specializes in Medical Psychotherapy

The half life is the time it takes for the active substance of a drug to reduce by half. For Olanzapine this is approximately 30 hours (varies between 21 to 54 hours).

Answered 6/2/2023

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