Niacin is the common name for which of the following vitamins?

Niacin is the common name for Vitamin B-3, which plays a crucial role in the body as it helps convert food into energy. It supports the function of the nervous system and is important for the health of skin and digestive systems. Niacin is involved in the synthesis of hormones in the adrenal glands and has been shown to improve cholesterol levels, making it significant for cardiovascular health.

The other vitamins listed have different roles and functions in the body. Vitamin B-1, also known as thiamine, is important for carbohydrate metabolism and nerve function. Vitamin B-5, or pantothenic acid, is essential for the synthesis of coenzyme A, vital for fatty acid metabolism. Vitamin B-7, commonly called biotin, is necessary for carbohydrate, fat, and protein metabolism. Each B-vitamin has unique contributions, but niacin specifically refers to Vitamin B-3.