1&2. 荷花賣個隻"免X寶"牛初乳, 膠囔, 粉狀(去膠囔加入奶度或好立克 or Ovaltine 一齊飲). As far as I know, infant can also take colostrum if he/she is not allergic to Milk
3. 荷花親子 price around HK$140 / bottle, 60 capsules of 100% NZ 牛初乳
4. Somebody says Colostrum is very good for Eczema (because some Eczema patients are lack of IgA, Colostrum has lots of IgA, IgG...) but somebody suggests Eczema patients shouldn't take bird nest because of its 生長因子 (same as bird's nest, Colostrum is rich in 生長因子!) So, depends and you need to find it out yourself (find out what kind of Eczema patients you are)