How to Prime an Inhaler (and Why It Matters)
💡TL;DR: Prime new metered-dose inhalers (MDIs) with 2–4 test sprays and re-prime after about 1–2 weeks of no use or if dropped so the first dose contains medication. Skipping priming can make the first puff mostly propellant with little or no medicine. Dry powder inhalers (Diskus, Ellipta)