Thanks Saralou. It does sound like it must be this one the doctor meant. The thing is, having googled the drug and seen how it acts, on the basic biological level - plus side effects - I feel even more reluctant that DS1 should juts be 'tried' on it for 3 months.
He deosn't - as far as I can see - present with the classic signs of cyclical vomiting symdrome nor with abdominal migraine. In fact, the doctore only suggested these conditions because she couldn't think of anything else it might be - although he's soon to be tested - blood tests and barium meal - for other possible things.
When I look back over two years that I've recorded the number of times he vomits - (about 18 episodes, each of which would include anything from one to 15 vomits per day of that episode) - it seems to me that there are a variety of reasons why he vomits and that he simply has a hyper-sensitive gag reflex.
So - if he gets any kind of virus - he tedns to vomit more than most children. If he hasn't pooed for a couple of days, he might - or might not - vomit once and be fine afterwards...if he sees, smells or tastes anything that disgusts him, he might vomit (although this is less frequent nowadays). If he has a tummy bug, he'll vomit a lot...
But I don't think this is like what i read of cyclical vomiting syndrom or abdominal migraine. I think the doctor is - as you'd expect - searching for why he vomits a lot and so her best try, along with various tests, is to put him on meds for antimigraine/ cyclical vomiting meds.
I can see her reasoning but I'm really averse to anyone - especially my DCs - taking something so powerful - that can have rebound effects when you come off it - when they might not need it.
Between times that DS1 is ill or - even if not ill - vomits - he is absolutely fine. I'd hate him to be on medication when he's OK. Whilst he vomits - on very rough average (and for a variety of reasons) every two months - if i look at this another way, this means that he can have 8 to 10 weeks when he doesn't vomit and is absolutely fine.
Yet because he vomits so much compared to most of his peers, this is why I've sought further help and investigations. So I feel a bit silly not to pursue what the doctor has suggested. However, coming from a medical family background, I know only too well that medicine is not an exact science and that every day, doctors have to make decisions based on a short NHS assessment, that guides them to a first-choice next step and then so on and so on in a process of elimination - if a diagnosis isn't immediately obvious.
Nightcat, when you decided against medical advice for your DC, were you treated less well after this/ frowned upon/ accused of not looking after your child?