Dissolve it in the bottle before you add the milk powder. We swirl aggressively! We also had to up the test size to a size 2 (mam bottles) for his gaviscon feeds
We haven't actually had any issues She's on neocate so cool milk and I pot the milk and gaviscon together ready for each bottle and just add together give a little swirl and it all dissolves Maybe if adding to hot water ita clumping up?
You have to swirl it down and then aggressively shake. Roll the bottle right way up between your hands first then shake. Make sure bottle is warm/hot first x