Shark Tank Weight Loss Gummies are a type of supplement purported to help support weight loss while improving energy, mental focus and digestion. While some include ketones—an alternate fuel source for the body—others mainly include apple cider vinegar. Many keto gummy brands claim to encourage a state of ketosis, but experts say not enough research exists to suggest that taking exogenous ketones can induce ketosis in someone who isn’t following a strict ketogenic diet.