Again correct to swallow tablets to get most high (8)

I believe the answer is:

reediest

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'most high' is the definition.
Both the definition and answer are superlative adjectives. Perhaps they are linked in a way I don't understand?

'again correct to swallow tablets' is the wordplay.
'again correct' becomes 're-edit' (to re-edit something is to correct it again).
'to swallow' indicates putting letters inside.
'tablets' becomes 'es' (E can refer to an ecstasy tablet).
'reedit' going around 'es' is 'REEDIEST'.

'to get' acts as a link.

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I've seen this clue in The Times.

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