I'm doing Arise and Shine for 30 days and their Cleanse support desk told me NO on Keifer during the 30 day cleanse. The only dairy product they support is goat whey.
REASON: As I understand it, from reading the 2 books, we need to keep our intestines alkaline as much as possible for the plaque to disslodge and go away. Cleansing is hard work for our body and requires allot of electrolites. So body is pulling organic sodium etc. and this causes the intestines to become acidic. To counter balance this, I have to only consume highly alkaline forming foods.
Keifer (mine is homemade from raw organic cow's milk) is mildly acid forming in the intestine. This would not ruin my cleanse but it would slow it down considerably.
So as hard as it is for me, I've had to let my Keifer mother die out and I'll start up a new batch when the cleanse is over. I'm taking their probiotic capsules during the cleanse.
There is a keifer forum here at curezone.