Amazon calculates a product’s star ratings based on a machine learned model instead of a raw data average. The model takes into account factors including the age of a rating, whether the ratings are from verified purchasers, and factors that establish reviewer trustworthiness.
My Golden Doodle is now 12 years old and started getting arthritis in his front leg . After 2 days he was able to move Around without limping. The swelling is gone and he acts like a younger dog . I bought a triple pack after I saw what it did for him .