Hi AStrid. My little girl has just been diagnosed with reflux too. At the moment we are just giving her Mylanta - 1 to 2 ml before each feed. We have a script for losec if this doesn't work.
The Mylenta doesn't taste too bad I don't think - minty, but she doesn't like it much anyway. I use a syringe to give it to her before a feed. She sucks my finger and I slip the syringe in by the side and slowly put it in with the sucks. It's the only way she'll take it but I feel very sneeky! Maybe give it a go?