In which form astronauts take their medicine? (7)

I believe the answer is:

capsule

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'medicine?' is the definition.
(capsule is a kind of medicine)

I don't understand the remainder of the clue.

(Other definitions for capsule that I've seen before include "form of medication" , "Lozenge - space vehicle" , "Type of pill" , "Gelatinous container with medicine inside" , "Rounded gelatinous container of medicine" .)

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

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