"The data suggest that...twice daily dosing may be required in the older patients. Patients with baseline FVC > 85% may also benefit from twice a day dosing (see Table 1)."
Okay, I am going to show this to my doc at my next appointment. I fit both of those criteria. But, when I recently asked him about taking it twice a day, he told me the benefit does not outweigh the cost of the drug :/