Not essential; unessential.
Being a substance that is required for normal functioning but does not need to be included in the diet because of the body's ability to synthesize it from other nutrients:
Unnecessary and out of place; impertinent
Find another word for unrequired. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for unrequired, like: dispensable, inessential, needless, nonessential, uncalled-for, unessential, unnecessary, unneeded and necessary.