A German court has ruled that hangovers are an "illness".
It came after a company that made an anti-hangover drink was accused of making illegal health claims about their product.
It was alleged that since a hangover was technically an "illness", the product could not legally claim to be able to cure it.
The case was taken to a court in Frankfurt, where judges ruled against the company.
They claimed that illnesses can include even "small or temporary" changes to the body.
The ruling said: "Information about a food product cannot ascribe any properties for preventing, treating or healing a human illness or give the impression of such a property.
"By an illness, one should understand even small or temporary disruptions to the normal state or normal activity of the body."
It comes just days before the start of the world-famous annual Oktoberfest beer festival in Munich.
