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the fundamental issue of someone say who has asthma can take an inhaler but someone who doesn't can't
Actually, somebody who doesn't have asthma can take the most common inhalers, because they don't require a TUE. Feel free to take 1600μg a day of both beclomethasone and salbutamol if you think it will do you any good, although if I was taking anywhere near that amount I wouldn't be racing, I'd be standing by to go to A&E if things got any worse.
It needs three doctors to agree, your referring doctor and two out of three on the TUEC :)