I'm in a TV production, necessary for good life (7)

I believe the answer is:

vitamin

I'm a little stuck... Click here to teach me more about this clue!

'necessary for good life' is the definition.
I can't tell whether this defines the answer.

'i'm in a tv production' is the wordplay.
'production' indicates an anagram.
'im'+'in'+'a'+'tv'='iminatv'
'iminatv' anagrammed gives 'VITAMIN'.

Can you help me to learn more?

(Other definitions for vitamin that I've seen before include "C, perhaps" , "Tim, Ivan (anag)" , "Food constituent" , "Essential diet compound" , "Organic substance essential to life" .)

I've seen this clue in The Telegraph.

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