Thank you for your query. I presume that your mother's blood sugar is well under control as you have not mentioned the values. You have not mentioned since when is she vomiting
, whether after starting the medication or even earlier.
Medicines seem to be fine. On occasions anti-tubercular drugs may be responsible for vomitings. You need to discuss with your treating doctor and get the needful investigations done.
Your mother should have a normal diet preferably rich in protein. However, it shall depend on her ability to assimilate the food.
Wishing your mother a speedy recovery.