try contacting Crossgates Lab , if you google it you will get the website , they are fab do allergy testing and herbal / aromatherapy remedys . Cured my friends ponys allergies very quickly
i had my colt done in Nov , it was all very straight forward , no medication or aftercae , i just had a torch that i could shine 'up there ' to keep an eye on the cut etc
my conni has been really fussy , he hates anything on his tounge and we work him in a half moon french link at home and for the ring we have a waterford pelham on him , which seems to have solved the probs