noun Descargar 🔗Compartir Niacina A water-soluble vitamin, a component of vitamin B complex, found in meat, yeast, and dairy products; it is essential to metabolism. Examples : "My grandmother takes niacin supplements to help with her energy levels. " Mi abuela toma suplementos de niacina para ayudar con sus niveles de energía. medicine physiology food biochemistry substance biology chemistry Chat con IAJuego de vocabularioPracticar lectura