Well come to HCM Thank for asking I really appreciate your concern, condition of vomiting could be drug induce it is due to gastritis (Drug Induced ) antibiotic does it very easily, and get rid of this condition I would suggest Domperidone 10 mg three times in day, and Tab Omeprazole 40 mg once in day, it is nothing to worry it will be fine soon, you need to be careful in diet better to be nil by mouth for few hours once the vomiting being stopped then you can have the routine diet, hope this information helps.