Thanks for choosing health care magic for posting your query.
Thanks for the detailed and complete description that you have give,
From what you have said, she is on sita s-20 which has escitalopram which is an SSRI
antidepressant. SSRI are known to cause vomitings and diarrhea
by acting on the gut serotonin. Most of the cases, the cause is not obvious. Her antidepressant should be shifted immediately to bupropion
or some other drug. Please do consult you psychiatrist
and discuss this issue with him.
Also consider stopping all the drugs as of now and continuing with psycho therapeutic intervention until the vomitings settle down. Your psychiatrist may help you with such therapies.
Also if she is vomiting so frequently, do monitor her serum potassium levels.
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:
Wish you good health,
Dr. Srikanth Reddy M.D.