my baby also have 啖 for the first 2 weeks, i also worry whether due to the milk, but gradually it disappear lar. i also tasted the milk and its not sweet. so i think it may due to his body hasn't developed well enough and since he take hk milk powder at hosiptal. i think it's already good that he take 森永,if taking hk milk powder like a+ or s26, it may be worser. it's my situation only. u may monitor him and see whether it is better or not.