All of the following are drug absorption characteristic of pediatric patients EXCEPT?
1) In neonates, the Gastric pH is >4 and gastric emptying and intestinal transit are faster
2) In infants, the pH is 2-4 with increasing emptying and transit time but biliary function is near the adult pattern
3) Low gastric pH in neonates and infants result in higher Bioavailability (F) of acid labile drugs such as penicillin G, ampicillin, and nafcillin
4) The fast GI transit reduces the rate and extent of absorption in neonates, infants and young children
5) The neonates are difficult to absorb fat soluble vitamins compared to infants and children due to the immature biliary function