Hi, I have a 3-month old infant. She has the following digestive problems: 1) Feeding is 4 ozs. of formula. She spits up 2 ozs. of the 4 ozs. 2) She appears normal except for occassionally crying. One pediatrician and one general practitioner could not find anything wrong. The practitioner put her on ranitidine. All my research says that she will grow out of this condition within 18 months. I'm afraid that this constant throw up at every feeding will cause permanent internal damage if persists for months. Please help.