My Mum supplements her diet with vitamin pills.
First, "vitamin C" is two words, not one word. And second, it is not countable. If you were referring to vitamin C tablets, for instance, those would be countable (for instance there might be 100 in a bottle). But "vitamin C" itself can be measured (for example, in milligrams) but not counted.
The word "vitamin" is a noun. It refers to organic compounds that are essential for normal growth and nutrition in animals and humans.
You didn't write a sentence, you wrote a question. So there isn't a third word in that "sentence." Or if you are trying to be a smart aleck, "this sentence" also doesn't have three words, but in that case you didn't use correct punctuation. In either case it shows you don't really have a good grasp of the English language.
Yes, elements in a sentence are capitalized, such as proper nouns, the first word of a sentence, and titles.
Here is a sentence- There is a word chlorophyll which I have so idea what i means.
You need your vitamin c
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).
I ate the vitamins to stay healthy.
No. It's not necessary. Capitalize it only when it forms part ot the proper noun. Example: Vitamin Shop Store
Citrus fruits are a good source of vitamin C
Rickets is a disease caused by a lack of vitamin D.
Sometimes it is possible to forestall a cold by taking Vitamin C.
Both bell peppers and oranges are abundant sources of vitamin C.
Scurvy is a disease caused by a vitamin C deficiency .
The word vitamin (single) is just vitamin. For vitamins (plural) it is vitamin-vitamin.
I eat a vitamin every day before school.
Vitamin is a noun.