The vast majority of infants showing signs of Gastro-Oesophageal Reflux (GOR - in the UK / GER /Internationally) will grow out of GOR between the ages of 12-15 months of age.
This graph was taken from a study performed in Australia; they looked at the natural history of reflux in children up to the age of 2 years. As you can see 41% of infants showed signs of GOR between 3-4 months of age, and gradually this decreases until about 13 months of age when only approximately 5% are still showing symptoms.
As young infants grow ,become more upright, and start taking solid foods the frequency of spitting up begins to slow. If you have any concerns please always contact your medical professional.
This Article was kindly shared, with Permission by Living with Reflux in the UK.
Natural History and Familial Relationships of Infant Spilling to 9 Years of Age James Martin, Nicole Pratt, J. Declan Kennedy, Philip Ryan, Richard E. Ruffin, Helen Miles and John Marley PEDIATRICS Vol. 109 No. 6 June 2002, pp. 1061-1067.
Pediatric Gastro-oesophageal Reflux Clinical Practice Guidelines: Joint Recommendations of the North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition (NASPGHAN) and the European Society for Pediatric Gastroenterology, Hepatology, and Nutrition (ESPGHAN) Co-Chairs: YvanVandenplas and Colin D. Rudolph Committee Members: Carlo Di Lorenzo, Eric Hassall, Gregory Liptak, Lynnette Mazur, Judith Sondheimer, AnnamariaStaiano, Michael Thomson, Gigi Veereman-Wauters, and Tobias G. Wenzl Journal of Pediatric Gastroenterology and Nutrition 49:498-547 2009 by European Society for Pediatric Gastroenterology, Hepatology, and Nutrition and North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition
GE Reflux in flux: New definitions, new guidelines, new data on acid suppression in children Dr. Eric Hassall, Division of Gastroenterology The university of British Columbia.