I have 5 week old with silent reflux. On alimentum and prevacid (lansoprazole). Can I add rice cereal to formula to help keep it down. If so, how much and how often?

Maybe. The use of alumentus suggests there is concern for possible intolerance to some of the protein sources in the earlier feeds. Rice cereal will have a foreign protein source and may be a problem. The amount is somewhat arbitrary.When using cereal many add a teaspoon/4 oz.You could get a similar effect by adding some alumentum powder (same amount) and not have a new protein.The idea is to thicken fds.