Send up medicines, rapidly, to tackle something deadly (7)
I believe the answer is:
arsenic
'send up' is the definition.
Both the definition and answer are singular nouns.
Maybe there's a link between them I don't understand?
'medicines rapidly to tackle something deadly' is the wordplay.
'ARSENIC' is hidden backwards within the letters.
However, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for arsenic that I've seen before include "killer" , "Element No 33" , ", it goes with old lace" , "-- and Old Lace (play)" , "Poisons in scare" .)