Possible Clues:

• Setter's shock after too much 24?
• '...that bit one' completes a hangover nostrum
• '...that bit one' completes a dubious hangover remedy
• Hangover cure that's taken from best friend's coat
• For example, setter's warmer breakfast-time drink?
• Alcohol taken as a hangover cure
• Hangover cure
• Do high tea for drunk, as a cure for a hangover
• Main report relates to The Cure
• Hangover relief, supposedly