Crossword Genius

Injured hip? Need package of rare drug (9)

Ross

I believe the answer is:

ephedrine

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

'drug' is the definition.
(I've seen this before)

'injured hip? need package of rare' is the wordplay.
I cannot quite understand how this works, but
'hip?' could be 'in' (both can mean fashionable) and 'in' is found in the answer.
'rare' could be 'r' (listed by Oxford Dictionary of Abbreviations) and 'r' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for ephedrine that I've seen before include "Bronchitis/asthma drug" , "Drug used for asthma and hay fever" , "Stimulant" .)

I've seen this clue in The Guardian.
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