April 6, 2021 No Comments FREE Grain Berry Cereal from Doctor Oz Come back on April 6, 2021 at 12pm ET and be one of the first 750 participants to enter to receive a coupon for a FREE box of Grain Berry cereal. FREE Grain Berry Cereal from Doctor Oz – EXPIRED Facebook Twitter Add Comment Notify me of follow-up comments by email. Notify me of new posts by email.