What is pantothenic acid commonly referred to as?

Pantothenic acid is commonly referred to as Vitamin B-5. This vitamin is crucial in the body's metabolic processes as it plays a significant role in synthesizing coenzyme A, which is essential for fatty acid metabolism and the production of energy from carbohydrates and fats. Additionally, Vitamin B-5 is important for the synthesis of hormones and cholesterol, contributing to overall health and well-being.

The other options represent different vitamins within the B-vitamin complex but do not refer to pantothenic acid. For instance, Vitamin B-6 is primarily involved in protein metabolism and cognitive development, while Vitamin B-4 (also known as adenine) is not a vitamin in the traditional sense, and Vitamin B-2 (riboflavin) is essential for energy production and the metabolism of fats, drugs, and steroids. Each of these vitamins has its unique functions and roles in the body, but pantothenic acid's designation as Vitamin B-5 specifically distinguishes it and signifies its importance in metabolic health.