active ingredient in flonase flonase glucocorticoid About Essence-In-Use › Forums › Essence-In-Use › active ingredient in flonase flonase glucocorticoid This topic has 0 replies, 1 voice, and was last updated 2 years, 2 months ago by SofiaDameron. You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In