web sites state that often it is not the alcohol that sets off the immune response but something in the drink such as hops, wheat or sulfites in wines, or grapes themselves.
I google up "allergies" and alcohol & allergies, several web sites appear. You need to pin point which alcoholic beverage it is.
I google up "allergies" and alcohol & allergies, several web sites appear. You need to pin point which alcoholic beverage it is.