$5/1 Zantac Coupon Available Through MondayFebruary 24, 2011 by Mitchell Wischmann This post may contain a link to an affiliate. See my disclosure policy for more information. This coupon is only available through Monday, 2/28!Zantac has another great high value coupon available! Head over and print a coupon valid for $5/1 Zantac product. This one will go fast, so hurry and print it while it’s available!