Most drugs used to treat asthma fall under which category of drugs?

Most drugs used to treat asthma fall under which category of drugs?
a) anticholinergics
b) adrenergics
c) corticosteroids
d) all of the above
e) a and b

Answer by Dave
d. is your answer.

Know better? Leave your own answer in the comments! Information on Asthma from Gooasthma.info Choices including causes, symptoms, diagnosis, risks and treatment and with links to other useful resources.

---

Orignal From: Most drugs used to treat asthma fall under which category of drugs?