Divine Health Don Colbert, M.D. Vegan goBHB® Non GMO Gluten Free Lactose Free No Artificial Sweetener No Artificial Preservative GMP Quality – Good Manufacturing Practice Certification Dr. Don Colbert MD is a practicing Medical Doctor and two-time New York Times Bestselling author of The Seven Pillars of Health and The Keto Zone Diet. He formulated Keto Zone Instant Ketones to aid individuals in entering ketosis.