Cinnamon is allowed on CD and I don't think it would affect ketosis; I guess the reason for it not being allowed on LL is as Donnalou said. But would a tiny spronkle of cinnamon really drive anyone to a full blown binge any more than a LL bar would?
I'm not suggesting anyone goes against their LL counsellor but I just think it seems a bit extreme. As for the PH ... it consists of the indigestible outer husk of a plant and is carb and cal free so won't affect ketosis. I don't think I'd have been able to last on SS as long as I did without PH. A bowl of filling porrige or semolina saved the diet on many an occasion when I wanted something to eat - not drink.
I'm hoping to get back to SS soon and will be using pH from day 1.
Have you guys tried the banana shake hot. My LLC suggested it to me, I thought that she had lost it but it's delicious! I have it ever morning, with not too much water, like a hot banana custard thing, it's yummy and nice morning comfort food