I'm really worried about my mom. She's 60 and has been having shortness of breath (SOB) when she's stressed. The doctor found moderate lung restriction from her PFT report and gave her a Butamate 400 inhaler to use for 8 weeks. All her other test resultsblood work, ECG, echo, and x-raycame back normal. Im just wondering if the inhaler is something shell need to use forever or if this is just a temporary thing?