Our products come directly from the manufacturer. This ensures that the products are backed by a 100% guarantee. On-line internet pharmacies are not purchasing from the manufacturer and are receiving their product from unknown third party sources. The pharmaceutical manufacturers will not honor any warranty or guarantee on products purchased through internet pharmacies. All purchases made through our hospital are guaranteed for product dating. Many internet pharmacy products can be close to expiration when they arrive, yet cannot be returned. Special offers, rebates, and coupons made available from the manufacturer can not be applied to internet purchases. Once shipping and handling costs are applied to internet purchases, the prices can be higher than purchasing guaranteed product from a hospital pharmacy.