We never used it, but I’m pretty sure I’ve seen other moms post about flavor packets you can get. Maybe check to see if they have a website?
Are you switching from a different formula? If so, you can start by just mixing the Neocate with some of the old formula and gradually increase the Neocate to old formula mixture until she is drinking it straight.
I’ve also read that some moms have used baby food bananas or baby food pears to flavor it.
Hopefully someone more experienced will chime in.