Drinks elixirs, without noting contents, and expires (6)
I believe the answer is:
lapses
'expires' is the definition.
(I've seen this in another clue)
'drinks elixirs without noting contents' is the wordplay.
I cannot quite understand how this works, but
'drinks' could be 'laps' (lapping is a kind of drinking) and 'laps' is found within the answer.
The remaining letters 'es' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'and' is the link.
Can you help me to learn more?
(Other definitions for lapses that I've seen before include "Oversights" , "Failures to maintain higher states" , "Falls in standards of behaviour" , "Slight errors caused by forgetfulness" , "declines" .)