 So why not start giving each member of your family a single one-a-day brand vitamin A and D tablet each day? That way you'll be sure they're getting more than their minimum daily requirements of these two important so-called cod liver oil vitamins. And the price will appeal to your budget-weary eye. Because a single high-potency one-a-day A and D tablet does the job, the cost is much less than lower-potency kinds which require three or four tablets daily.