Multivitamins are designed to provide a convenient way to get the essential nutrients your body needs to function properly, especially when your diet may be lacking in certain nutrients. Many people take multivitamins as part of a healthy lifestyle, as they can help support overall health and wellness. For instance, multivitamins can provide the body with the vitamins and minerals needed for healthy immune function, energy production, and bone health. They also help support healthy skin, hair, and nails.