I've personally never tried any AZO products or AZO yeast. It might give you some relief, or it might not. Have you gotten your yeast infection treated yet or are you just experimenting with some over the counter products?
I don't know about the mistletoe thing--but, I can tell you that AZO yeast actually GAVE me a yeast infection (I took it for other reasons and got a yeast infection as a result). I don't recommend it at all.