Yes, there is a vitamin Q, but it is more commonly known as Coenzyme Q10 or ubiquinone. It is a naturally occurring biochemical cofactor and antioxidant produced by the human body. While considered a vitamin, the body can produce some, but it may not be enough for optimal health, therefore supplementation can be beneficial.
Vitamin Q is similar in structure to vitamin K and vitamin E. It belongs to the category of fat-soluble vitamins and can be stored in the body until needed. Vitamin Q is important for many bodily functions, including the production of energy and the protection of cells from damage.