dear user good news is that you are pharmacist so it will help alot at the begining i would like to tell you that these symptoms are common with infants and doesnot mean to worry about that infants till their 4th month of age have what is called infantile colic that resembled in gastric distension and gases and crying so most of infants are described taking simethicone syrup that help alot in relief of these symptoms and distension but you should give him simethicone after feeding not before it as the time of administration is important to have good effect ...also the preperation of the milk formula is important as manufacture recommend to how to dilute with water and amounts of powder diluted to certain volume of distilled water according to manufacture....water should be boiled then cooled before preperation of formula as micro organism in water can cause these symptoms...cleaning and boiling of bottle before use is very important also.....about the vomiting the most common cause of that is the reflux of gastric acid and it is normal problem with multiple infants but if the baby has over feeding it will be the cause...your baby should feed regularly every 3 hours that suitable for his age...over feeding causes more vomiting and more reflux............wish your baby healthy life