Crossword Genius

Some medicine appears to act on wise men (7)

Ross

I believe the answer is:

dosages

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

'some medicine appears' is the definition.
I can't judge whether this defines the answer.

'act on wise men' is the wordplay.
'act on' becomes 'do'.
'wise men' becomes 'sages' (I've seen this before).
'do'+'sages'='DOSAGES'

'to' acts as a link.

Can you help me to learn more?

(Another definition for dosages that I've seen is " measures".)

I've seen this clue in The Globe and Mail.
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