We understand that taste preferences can vary and apologize if you find our Essential Shake unsatisfactory. As part of our 30-day satisfaction guarantee, you are entitled to a full refund if not satisfied with the product's taste. There is no need to return the opened bag; we suggest you may give it to a friend who might appreciate it. To process your refund swiftly, fill out the Survey provided by our customer service. Your feedback is valuable as we continually strive to improve our product formulations.