Official rules: No purchase necessary. Must be 18 years or older and a resident of the USA to be eligible to win. Contest begins, May 1, 2018 at 12am PST and ends July 31, 2018 at 12 PM PST. Winners will be selected at random. One winner will be selected and notified within 48 hours of selection. If winner does not claim prize within 48 hours from notification a new winner will be selected. Total prizes are valued at $500. By giving us your email address you are opting in to receiving news alerts and special offers from GM Pharmaceuticals via email. Visa is in no way affiliated with this giveaway. PLEASE NOTE: You can enter this contest as many times as you'd like but that does not increase your chances of winning unless you share the contest link.