Stacy, I don't but I'm sure others will have insight. I've never been on steroids and when I asked my specialist how will I know when/if I need to go to the ER, etc. (

), he basically first said "you'll know" (a little scary, huh?) and then he added, "you call me". So, while I'm sure that others will be able to chime in, chances are that before filling a prescription, that's what you should do too! (I'm assuming there's a 24 hour answering service on their phone...)
Also, I know that sometimes people go on IV instead of pills so that's another reason to not take the plunge until you speak to your doctor -- I don't know in what scenarios one is used over the other.
In any event, let's hope that prescription stays in your house forever or if not, for a very, very, very long time!