What are the health issues or side effects of vitamin D3 overdose? Instead of 0.5 ml a day given twice in a day total 1ml. I’m worried after half an hour 1 time vomit she did? From past 2 weeks she is vomiting and doctor given Damstal 0.3ml later increased to 0.8 ml after that too she is vomiting. For weight loss and vomiting doctor given Damstal,Simyl MCT oil 1ml-1ml-1ml later increased 2ml-0-2ml and nexpro junior half pack in a day. Weight loss issue is ok now but vomiting not stopped. Worried about her health