is vitamin C capitalized
They are brand names that have to be capitalized. It's like vitamin C as a substance should not be capitalized but all words in a brand name of a product such as Chewable Vitamin C or Vicks Vitamin C Drops should be capitalized.ditor # 2 tells me that the word vitamin should only be capitalized when it is the first word in a sentence. Any other time, the spelling should be lower case, as in vitamin C. Both of these editors require text written in US English, so language differences between cultures does not appear to be a factor.