Hello, Thanks for choosing health care magic for posting your query. I have gone through your question in detail and I can understand what you are going through. Olanzapine can cause increased night sweats but it is a very rare adverse drug reaction. There could be many other common causes as well. The fact that the olanzapine is causing it or not will be determined by following the temporal relation of taking the drugand the appearance of side-effect. If it is cause of the drug then the sweats should stop after 2 days of stopping the drug as the drug is completely washed out by then. that will give you an idea. But from my experience O feel that the culprit is not olanzapine. You may inform your psychiatrist before you experiment with your drug. Hope I am able to answer your concerns. If you have any further query, I would be glad to help you. In future if you wish to contact me directly, you can use the below mentioned link: bit.ly/dr-srikanth-reddy Wish you good health, Kind regards Dr. Srikanth Reddy M.D.