We used apple juice and fed it via oral syringe. It worked great. We were able to give quite a lot of sodium without it being rejected. We initially split it into 6 doses (more juice), but found we could do it in 3 which worked well with the Cortef dosing. You don’t want to use too much juice as it will make bowel movements more likely to cause a rash. We used about 4cc’s juice in each syringe. Hope that helps!