Drug manufacturers sometimes provide coupons that cover a limited amount of medication at a low price. Pharmacies will accept coupons you provide them and, at times, apply these coupons on your behalf when they have access to them. The price you do pay for that medication when a coupon has been used may not be applied towards your deductible or out-of-pocket maximum spending limits. Be aware that the price of future refills may be quite different from what you previously paid while using a coupon.