You do not mention your son's age. Valoid should preferably not be given to children under 2 years of age in order to stop the vomiting that occurs with gastro unless this is really necessary.Children with gastro can become dehydrated. Valoid may often cause drowsiness. When a child has recently had gastro they often do not want to eat for a while. It is important to make sure that your son drinks a lot and if he is still having loose watery stools then you should give him extra sips of Rehidrat solution several times during the day in addition to his usual daily fluids.
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