Regular beans with poor diet wants a vitamin! Tempted? (7)
I believe the answer is:
enticed
'tempted?' is the definition.
('entice' can be a synonym of 'tempt')
'regular beans with poor diet wants a vitamin' is the wordplay.
'regular' indicates alternate letters.
'with poor diet wants' becomes 'tice' (I can't explain this - if you can you should give a lot more credence to this answer).
'a vitamin' becomes 'D' (D is an example).
The alternating letters of 'beans' are 'en'.
'en'+'tice'+'d'='ENTICED'
Can you help me to learn more?
(Other definitions for enticed that I've seen before include "were seductive" , "Tempted, lured" , "Persuaded with attractive offer" , "Given inducement" .)