BLOCKED: The answer to a stuffy nose could be in the sea

Drugs company Shering-Plough says the water has been proven to clear mucus and help people breathe more easily.

The water is taken from the busy shipping lane off the coast of Saint Malo, France, and sols as Afrin PureSea Hydrating Nasal Rinse.

The company describe it as: "The only nasal rinse product made of 100% purified seawater".

The bottled water is being sold in the US for £10.