I am currently attending a First Aid at Work Course. If I am called to a patient who is choking then I should do everything in my power to clear the obstruction, even if I injure the patient (EG break a rib). If I have a patient with an asthma attach who does not have their blue inhaler with them and they are getting worse and an ambulance is delayed and another person has a blue inhaler I am not allowed to use that inhaler on my patient. I believe that I would not do my patient any long term damage by giving them this inhaler to use and could save their life. Can anyone confirm that this is the case. I am more than happy, were I ever in this situation, to make the decision to use the inhaler, but some knowledge regarding inhalers would be helpful. Are the doses the same etc. Could I do long term damage by using someone elses inhaler. I would not hesitate to use another person's epi-pen to treat anaphalactic shock as I know that adrenaline would not kill. Your help would be much appreciated.