Re Natures Bounty Cranberry Supplement 504 Mg Cranberry Concentrate In

re natures bounty cranberry supplement 504 mg cranberry concentrate in comparison to ultra strengthcranberry from finest nutrition 500 mg standardized extract it is all vewry confusing the natures bounty says on front 25,500 mg. it is important that I take same dosages becuz of being on warfarin but everytime i go to pharmacy, there are different bott.lles please explain