Go HERE and register your email. You will then be able to print a coupon for $5 off a purchase of Zantac 150. Some stores sell the 8ct box for less than this, which would make it free. Or use the coupon for $5 off of a larger size box. If you hit your "back" button on your computer after your coupon starts printing, until you see the "S" again, you may be able to print a second coupon.