SMA does have fibre in it which was added recently, but it is soluble fibre known as oligosaccharides (sp?) aka prebiotics; the 'bran' type of fibre (also known as insoluble fibre or roughage) isn't suitable for babies as it can clog them up more and stop them absorbing certain nutrients effectively. Prebiotics help some babies to poo more easily but aside from that benefit there isn't any other proven benefit to the immune system or anything else. Richajm in this country all the formulas have to meet very stringent regulations, so they are all very similar and all must contain certain levels of vitamins and minerals. Any other added ingredients such as LCPs are not proven to have any benefit or nutritional advantage, it is only in the past 5 years that the government agreed to allow these extra ingredients in formula, if they were so necessary then the government would have made it law that they have to be in formula and would have done so much longer ago. Good luck! xx