<s>[INST] My 10 year old son will wake up after falling asleep for about 1hr to 3 hrs. He will not cough but announce that he has to vomit. He will vomit and once he is cleaned up go back to sleep. He has not stomach pain or discomfort. This happens about 8 - 12 times per year. [/INST] Thanks for follow up. I understand vomiting happens when he is in bed only in horizontal position. We should differentiate gastroesophageal reflux, acetone mic cycling vomiting, high intracranial pressure. You should consult him at gastroenterologist and neurologist. What we can do ? At the first we can give risperidone 1 tab 3 times after 15 min before meal 1 month for increasing bonus of stomach sphincter, it will prevent vomiting2. Flax seeds-boiled 1 tablespoon for 1 glass water, give to Chat Doctor. 3. Give to him less chocolate, DAL, spinach, cocoa, market juices4. Before night don't give liquid, water, give only food for chewing. Best regards </s>