What is this and why do we need it?
CVV is a new authentication procedure established by credit card companies to further efforts towards reducing fraud for internet transactions. For Visa and Mastercard, your CID/CVV is the 3 digit number on the back of your card. For American Express, the CID/CVV is the 4 digit number on the top front of your card. If you cannot locate your CID/CVV or are have questions about your order, please contact 1-800-249-5770 or ebm@ebmedicine.net