I would suggest you to avoid Horlicks or any health drinks for the child ....these health drinks have too much of sugar which is not good for the baby.. I myself have never given to my son. ..my son used to also be fussy about drinking milk... It was due to a smell which they actually get. So I boiled the milk with little cardamon powder and that helped...sometimes gave fruit smoothies which served two purpose of milk and fruit to the kid... If these still don't work then give curd and paneer to the child... These are equally nutritious and have protein and are good... So even if the baby doesn't have milk and has curd and paneer then don't worry dear.... Take care