yes, in order for them to work

the best answer to that is never miss a day

Advair and Spiriva are both maintenance meds. If you don't take them regularly, they won't do you any good. Cutting them in half or only taking half a dose won't help either. Take them as prescribed.

Jean

I've missed taking them by accident and I see a big difference on how I feel

Yes they help build lungs up not like an inhaler for attacks