Spacer or no spacer?

Hey all. I’m a 42f and I’ve been diagnosed with asthma since high school. My asthma is well controlled and I only keep a rescue inhaler for emergencies. I don’t need it often but I keep it in my purse at all times just in case.

My doctor didn’t mention it but he prescribed a spacer to use with the inhaler. I’ve never used one before and since it’s so bulky I didn’t get it from the pharmacy.

Obviously I’ll talk to my doctor next time I see him, but I’m curious. For adults with well controlled asthma, are you using a spacer? Do you notice a difference when you do or don’t use it?