the thing with pomegranate juice is you have to research and buy the right one. what i mean is that nearly all of the p.juice you see at your grocery store is OUTRAGEOUSLY HIGH IN SUGAR! nearly 40 grams of the stuff, almost like drinking a can of soda! granted it's fruit sugar and not the same as the sugar content of a can of soda, but still sugar is sugar so be careful!!
your best bet is to go to a whole foods, trader joe's, wild oats, etcetera and look for your p.juice there, they have brands where the sugar content is below 20 grams.
also like someone mentioned all p.juice is pricey a bottle, but your only supposed to drink 1 to 3 ounces a day if it's too sweet then add 6 ounces of water or so to it.