1. Plural of niacin; B vitamins (nicotinic acid or nicotinamide) found in foods and used to treat deficiency diseases and high cholesterol.
Usage: Usually used in plural when referring to multiple forms or sources of the vitamin; Also called vitamin B3

Examples

• Niacins are essential nutrients that help convert food into energy.
• Many breakfast cereals are fortified with niacins to improve their nutritional value.
• The doctor recommended niacins to help lower the patient's cholesterol levels.
• Niacins can be found naturally in chicken, tuna, and peanuts.
• Deficiency in niacins can lead to a condition called pellagra.