A vitamini, also known as vitamin A, is a fat-soluble vitamin essential for various bodily functions. It plays a crucial role in maintaining healthy vision, supporting the immune system, and promoting proper growth and development. Vitamin A exists in two primary forms: retinol, found in animal products, and provitamin A carotenoids, found in plant-based foods like carrots and spinach. The recommended daily intake of vitamin A varies by age and gender, but it is important to consume adequate amounts to prevent deficiencies. Foods rich in vitamin A include liver, fish, dairy products, and colorful fruits and vegetables.