And with only three people said to know exactly what goes into Irn–Bru – long hailed by devotees as the ultimate hangover cure – perhaps that level of caution is understandable. 'After a night of drinking, blood sugar levels can dip, and people are often mildly dehydrated. Irn–Bru is a Scottish soft drink with a secret recipe seen by many as the ultimate hangover cureWhat is in Irn–Bru? Its listed ingredients include carbonated water, sugar, citric acid, flavourings – including caffeine, ammonium ferric citrate and quinine – along with sweeteners such as aspartame, preservatives and added colouring. It's not recommended as a healthy hangover cure.'

Source: Daily Mail April 05, 2026 21:54 UTC