Zrytec D is an over the counter allergy medicine that is available in any store that has a pharmacy. It is pricey. Twelve capsules cost around $15.00. The capsules are only effective for twelve hours, so users would have to take two capsules per day for full allergy relief. Also, in order to purchase this item at your local drugstore or supermarket, you must take the item tag off the shelf and take it to the in-store pharmacy. If you are shopping at Wal-Mart, this means that you will have to be entered into the pharmacy database (time consuming) and will have to purchase the medicine separate...