I haven't answered your postl because I'm not sure about Losec in babies but my husband takes it as a capsule. I can tell you it is a really effective medicine for reducing acid in the stomach - in a similar way to Zantac which you may know of. So its great for acid tummy and reflux. I would imagine it is just one dose a day like the adult but I'm not sure. It works pretty quickly within a couple of days, but may take a week or so to get the full effect.
I like Nurofen for teething too.
Leanne, NZ, Ella age 2 & Sam age 6months