first thing i would like to know the age of the child in question as the approach would be different in a very small child and an elder one, are there any other symptoms associated with loose motions and the reason for not giving anything orally.
the case as i can understand from your description is that of acute gastroenteritis
and in such cases there is no role of any antibiotic if its not dysentery
(that is if the stool is associated with blood or mucous). or the child is having any systemic infection rather than simple diarrhea
anyway, i would like you to discuss this case with the treating pediatrician
, and try to know the reason for this much of antibiotics and not being fed orally.
even if the motion is not controlled, if the child is not vomiting
and there is no any surgical cause he should be fed and at least liquid like ORS
or home made fluid drinks can be given. and if tolerated well this will also improve diarrhoea
generally these illnesses are caused by virus and some bacteria, and subside by themselves only with symptomatic treatment fluid replacement. zinc syrup is of help as it reduces the duration of diarrhoea by few days and a can see it being prescribed to you. so you can continue this
any further advice you need you can post to me. thanks