What vitamins for a 18 yr old boy who eats no veggies except starchy things?

Daily multivitamin: Eating a small amount of colorful whole vegetables daily by foods of preferred taste helps a person gradually develop a taste for healthy vegetables. Increase the amount over time. Meanwhile, in the absence of i and identified vitamin deficiency, a basic once daily multivitamin is generally safe and potentially useful as it provides the minimum daily requirements to avoid deficiency.