Firefly Detox was top of the "10 best hangover cures", beating N-acetyl cystine (in egg yolks) to 2nd place. Egg, face, in..

The text says: "Firefly De-tox. Firefly is a range of drinks that perk up the body when it needs it most, and its De-tox product is said to be a favourite of Prince Harry's when he's fallen foul of the shandies! The herbal lemon, lime and ginger drink contains milk thistle to promote liver function and ginger to boost circulation. It costs £1.49 from health-food shops and supermarkets.