A "vitamin" is also a pill that contains vitamins, eaten regularly to keep one healthy.

Fruits and vegetables are a source of vitamins

A vitamin is a chemical compound that is needed in small amounts for the human body to work correctly. They include Vitamin A, many B vitamins (like B₁, B₂, B₃, B₆, and B₁₂), Vitamin C, Vitamin D, Vitamin E, and Vitamin K. For example, citrus fruits such as oranges and lemons contain vitamin C.