hello , my baby is 5 months old . he is only taking vitamin d3 syrup 1ml per day as per doctors advice but the problem is now on some body parts the brown marks has grown up. i stopped the syryp for 7 days and the marks had gone away but when i started it again in 10 days the marks showed up again . pls tell me what to do . is there any problem if i stopped vitamin d3 permanently ?