My ds is 3.5 and has always been plagued with chronic ear infections, had grommets last year but still the infections kept coming.
About 4 months ago I read an article that said that 3/4 of infants are intolerant to cows milk as it contains high levels of mucas, and that goats milk should be offerred as an alternative. In 4 months he has not had 1 infection, and that is a miracle wher my ds is concerned.
He also didn't notice a change in milk as goats milk actually tastes nice (unlike Soya - YUK!)
Might not work for everyone, but you can always try!