CVS Pharmacy has $20 off $50 on nonprescription items by using a MasterCard with coupon code coupon code MASTERCARD10 and a MasterCard as payment. You can make it even better by stacking the code MEDICARE to take another $5 off for a total of $25. Note that the coupon codes are entered after you click on Verify Order and before Finish Order. Here is a screenshot for your reference. Note it’s possible that the stackable offer may be pulled at any time.