I eat a vitamin every day before school.
You need your vitamin c
No. It's not necessary. Capitalize it only when it forms part ot the proper noun. Example: Vitamin Shop Store
Food and Vegetables have vitamins in them.
No, the word "vitamin" should not be capitalized unless it is the first word in a sentence or part of a proper noun (e.g. Vitamin C).
My Mum supplements her diet with vitamin pills.
I ate the vitamins to stay healthy.
Retinoic acid is a noun for a derivative of vitamin A. That is the definition and it's also a sentence for retinoic.
These vitamin tablets will supplant your healthy diet choices.
Rickets is a disease caused by a lack of vitamin D.
Citrus fruits are a good source of vitamin C
Sometimes it is possible to forestall a cold by taking Vitamin C.
The more polyunsaturated fats you eat, the more vitamin E you will get.