I have a 13 month baby boy who has been on nan opti-pro formula since he was 2 months old. we did try s26 gold when he was newborn however we found this caused him constipation. what other babies formulates can we try? current weight is 16.9kg

Very overweight!!: At 13m old, a baby should be eating 3 meals, 2 snacks daily and drinking milk (500ml daily). The milk should be given only after they eat and in a sippy cup. A normal weight for a 13 m old is 8-12kg. 16.9 kg is extremely overweight for 13 months old. See your Dr for a thorough exam/lab tests, and proper nutrition for your baby. Childhood obesity can result in diabetes, high blood pressure, cancer