Yes it is. While it might be rather tart, it is an excellent source of vitamin C and several other nutrients.
Yes, cranberry juice is good for you and contains lots of vitamins and minerals!
Cranberries are good for teeth, but the sugar in the juice isn't.
Yes it is!
Yes, there is a substance in cranberry juice which makes it harder for bacteria to adhere to the walls of the bladder, hence the bacteria are more easily washed away in the urine.