This must have been done before, but I'm afraid I can't find it. Last year I developed an allergy to my beloved wine :( It gives me an excruciating stomach ache, followed by extreme vomiting (and, yes, this is after half a bottle!) I've assumed sulphites are the culprit. I do get tummy aches after eating other sulphite-containing foods such as sausages and crisps.
Thing is, everything I've found on the Web talks about asthma and migraines - neither of which I suffer from, thank goodness - not gut-related reactions like mine. I can't figure out whether sulphites are the problem or I should be looking at something less obvious.
I have a life-threatening allergy to sulphur-based drugs. So sulphur looks to be an obvious culprit - but sulphur comes in many different forms and I can eat eggs & onions, for example, in embarrassing quantities with no ill effects except stinky farts.
I'm hoping somebody might know where to find the precise information, or have researched it themselves? I can't afford allergy testing; have to experiment on myself.