So mother has copd.... uses concentrator nebulizer albuterol disk etc... she's been using more than prescribed and last time her doctor tells her do whatever it takes to help your breathing. Well at that time I was discussing her disc overuse not the liquids she uses in the mask. So now she's using like 5 vials within an 8 hour period instead of the 1 every 8 hours like she is suppose to. Just because the doc tells her this now she thinks it's alright. Those of you who are familiar with this medicine would understand what I'm saying. She's starting to really upset me!