We used it for 2 days. I'll be honest - for us it was rubbish. It made no difference to Ethan he was still throwing up everywhere and it's horrible to mix, it goes all clumpy and lumps were stuck in the teat so he couldn't get any out, which made him really frustrated. Maybe we had a bad batch or something but we gave up with it and went back to his normal milk powder. As he got older he grew out of reflux. I know this is probably not the greatest news but maybe it will work better for you, I'm sure that other people must have had success with it or they wouldn't prescribe it xxx