Hi, my baby is wakeful - but I think its the reflux that causes that, not the losec. My DD is a shocking sleeper and I think it is because she got herself into horrendous habits and now has pain association with sleep. She has been on zantac since 3weeks - 4months and losec ever since. She has just turned 1 and I have been told by the paed she will prob be on it till she is at least 2. The benefits of being on it far outweigh the side effects for my DD as she would not eat or drink and would have a burnt out osopheagus? So its important to talk to your doc if you are concerned. For us Losec has been a fantastic drug - I hate her being on meds for so long but it is much better than failing to thrive!!!