Wanko Vista is a very popular product on social media for dogs. Wanko Vista's SOD [Superoxide Dismutase] is an enzyme that removes reactive oxygen species from the body. It is said that an increase in reactive oxygen species in the body can cause various diseases. Wanko Vista is an SOD enzyme food made only from natural ingredients. It does not contain any synthetic coloring, flavoring, or preservatives. You can feed it to your dog directly, or mix it with their regular food. Expiration date: Image 2 Please feel free to ask any questions in the comments. *Please refrain from comments asking for a price reduction.