Hand luggage
It is usually best to carry all your medicines with you in your hand luggage, in case your checked luggage goes missing or your medicines are damaged in the baggage hold.
However, during current tightening of security and hand baggage restrictions, the Department for Transport has advised that you can only take up to 100ml of liquid creams or gels, and up to 50g of powder or tablets. Most asthma inhalers do not specify how much liquid medicine is contained within them (they are often measured in puffs or doses), but as a guide most inhalers contain approximately 10-20ml of liquid.