how do vitamin tablets work?

Question

For example you can get vitamin D from the sun, so how can it be put in a small tablet?

In: Chemistry

Answer 1

its also in food and can be created synthetically

“Vitamin D isn’t naturally found in many foods, but you can get it from fortified milk, fortified cereal, and fatty fish such as salmon, mackerel and sardines. Your body also makes vitamin D when direct sunlight converts a chemical in your skin into an active form of the vitamin (calciferol).”