Below is the CVS Coupon Policy, accurate as of January 2013:
CVS/pharmacy coupons (ExtraBucks® Rewards and ExtraCare® Coupons) and Third Party Manufacturer Coupons are accepted in our retail stores in accordance with the following guidelines:
CVS/pharmacy does not accept expired coupons.
CVS/pharmacy will not accept third party manufacturers’ coupons with another retailer’s logo
Coupons cannot be exchanged for cash [...]