Gives drugs to Hoskins and group on LSD coming up (9)

I believe the answer is:

medicates

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'gives drugs' is the definition.
The definition and answer can be both related to bodily activities as well as being verbs in their -s form.
Maybe there's an association between them I don't understand?

'hoskins and group on lsd coming up' is the wordplay.
'hoskins' becomes 'me' (where the crossword setter is 'Hoskins').
'and' says to put letters next to each other.
'group on' becomes 'set' (both can mean a collection. I am not sure about the 'on' bit.).
'lsd' becomes 'acid' (synonyms).
'coming up' says the letters should be written in reverse (in a down clue, letters go up).
'set'+'acid'='setacid'
'setacid' back-to-front is 'dicates'.
'me'+'dicates'='MEDICATES'

'to' acts as a link.

Can you help me to learn more?

I've seen this clue in The Independent.

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