I was having problems with excessive yawning too. I went to my doctor and we ran some tests. I was yawning so much it was causing me problems with daily life. Anyway, they thought I might be anemic or iron deficient. Both of these can cause excessive yawning because your lungs feel like they are not getting the oxygen needed because of low red blood cells to carry oxygen to the lungs. But both my tests were fine. I am a very anxious person by nature so we decided I was having an anxiety attack. The more I pay attention to this excessive yawning thing the more I think the doctor is right. I tend to do it when I am anxious about something. So there isn't really anything I can do except try and relax when I am having an episode to calm myslef. Now that I am aware of what triggers these episodes I am able to calm myself and they only last about a day vs. when they were lasting weeks sometimes.
Hi
Zyprexa (generic Olanzapine) is an atypical antipsychotic medication. Zyprexa is used to treat the symptoms of psychotic conditions such as schizophrenia and bipolar disorder (manic depression).
The most commonly reported side effects are sleepiness or excessive sleeping, dizziness, dry mouth and weight gain. Other side effects include akathisia (an inability to sit still), constipation, dizziness, orthostatic hypotension and tremors.
The yawning you experience is also a rare side effect reported with Zyprexa.
(Ref: http://bipolar.about.com/cs/zyprexa/a/meds_zyprexa.htm)
You should consult your doctor about the side effects you are experiencing with these medications and whether or not advisable to continue with Zyprexa.
Do write in about your follow up with your doctor.
Regards