Vomiting in infants and children is usually due to gastro-esophageal reflux disease (GORD or GERD).
The mechanism behind is due to the relaxation of muscles (sphincter muscle) in the lower part of the food tube - that is the esophagus.
Symptoms are-
Regurgitation of foods, vomiting, frequent and sudden spells of crying without any cause, aversion to eat, hiccups, etc.
Treatment
Small quantities of food at frequent intervals should be the method of feeding. Milk feeds should be thickened with rice cereals.
Homeopathic treatment
Medicines like Nux vom, Calc carb, Phosphorus, Robnia, Carbo veg. Etc . are the best medicines in homeopathy. Homeopathic medicines though treat symptomatically; it helps to correct the underlying pathology also. So after trying homeopathic medicines the cure will be permanent and the general health to the child is markedly improved. Homeopathic medicines are not only safe but easy to administer also.