Asthma patients using the Bricanyl Turbohaler have been warned of a supply shortage in the UK, reports the Daily Mail.

Stocks are ‘very low’ of the Bricanyl Turbohaler, which may be used by more than half a million people, Asthma UK has said.

People who rely on that specific inhaler to manage their asthma should make sure they have enough to last them through most of December.

Not all Turbohalers are affected by the shortage – only the Bricanyl brand. Manufacturer AstraZeneca said it will restore the supply ‘as quickly as possible’.