My DS is 10 and has started vomiting every 5 weeks or so, usually enduring a day of terrible nausea and vomiting that starts at 10.30 approx. He will generally be sick to a lesser extent the following day, then improve on day 3. Great health inbetween. Seems like CVS to me, we've done bloods, urine tests and scans and all are clear. GP very reluctant to make any sort of formal diagnosis, however. On our last visit we got some anti-sickness tablets but I am desperate to find a longer term solution, as my poor kid has now missed a lot of school and feels rotten when the vomit hits. No obvious triggers. Can anyone advise if there are supplements, e. g, B vitamins, that they've found helpful? Any tips in navigating this?!?