I have to use the lactose free s26 and advent bottles, we did use karicare thickener after feeds which helped some but we dont need that know that soilds are in the picture, we also used mylanta and Zactac at times. These days after a great pead spec we only use Losec once a day which is SOOOOOOOOO much easier and better for us. Good luck with all the treatments you just need to work at it and find what helps yuor bub, and try to remember they do grow out of it at some time.