Brexafemme: Helpful, or Not?

The FDA has approved Brexafemme, an antifungal drug, for treating vaginal yeast infections. The drug represents the first new antifungal drug class in 20 years. How does this new medication work? and What's the dose? Does this work for recurrent vaginal cases? Please note that there are also some cautionary items that WE MUST address here... Lets cover that now!