I have tried to juice over a peroid of time since starting NB and I never felt right. (with a juicer).
Now I can have fruit with TEI (if if doen;t bother me).
I do a kale and frozen strawberry one in a Ninja (Blender) with about 2 oz water and I have no negative effects. SO you may want to try small amount in a blend 1 x aday and see how you feel..Eveyrone is different what they can tolerate.
If you do with a juicer do not try more the 1-2 oz until you see how you feel on this.. It can cause detoxing effects that can be uncomfortable.