Hi C.-
My son and daughter both had reflux. My son is one year old and they started him at 3 months on Zantac, Prilosec and Prevacid (not all at the same time). Prevacid is the only one that worked for him. Zantac is the only one that worked for my daughter. This experience is typical for one med to work better than another, just as with adults. Adding Reglan to the mix is not uncommon, either.
According to our doctor, *A LOT* of babies outgrow reflux by 6 months, *MOST* by 1 year. If not, allergies, etc. need to be investigated. That is what we're doing now. Allergies to milk protein can cause gastric upset and reflux, according to our son's Pediatric Gastroenterologist.
My advice: If you are concerned, seek a second opinion. If you are comfortable with your son's pediatrician, ask for a referral to a Pediatric Gastroenterologist. The gastro doc is the one who has training with reflux and the damage it can do if not controlled.
PS- it is not abnormal for dosages to be increased as your baby grows. My daughter was on Zantac liquid and we had to adjust it about every 2-3 months. My son in on Prevacid solutabs and we used to give him 7.5 mg twice a day, but we recently had to go up to 7.5 mg in the am and 15 mg at bedtime. Dosages are generally a range of amounts specific to a child's weight at the time.
Hope this helps. I know it can be hard to watch your little one in pain. My son's ped gastro doc said the ultimate goal is not to stop the reflux, because that is impossible to stop completely. The goal is to have a "happy erupting volcano". The meds just neutralize the stomach acids, which decreases the damage to your little one's throat, which decreses his pain. All in all, both of my children were much happier on these types of medications.....
Please let us know what happens.