Many respiratory patients I know have used AllDayChemist dot com in India for well over a decade with no complaints. They get a wide range of medications from them, including inhalers, antibiotics, retin A cream, and many other Rx. No Rx is required and they have taken the meds from US pharmacies and those they get in the mail from this firm and swear by the pharmacy.
More of the Respiratory patients I know fill their Rx at this mail order pharmacy than Canadian or other pharmacies, particularly when they are in the doughnut hole.
The customer service is good as well. I was curious so I did place an order with them years ago, for Zyrtec in pill form (before allergy meds were made over the counter), retin a cream and a few other things. I received my delivery promptly and it worked as well as the Zyrtec I’ve obtained from any other source. It was much cheaper than I would have paid for my copay, even after shipping and though I have excellent drug coverage.