medication equivalents

I have no idea where to find a medication equivalent for US/UK, and need to find what they call cyclobenzaprine here, its brand name is Flexeril...

Im allergic to it and was told I need to get the info so if I ever needed a muscle relaxer I can let them know what not to give me, and I was told they will have to check before giving me an epidural...

So does anyone know the name for that over here or where I can find out?

TIA

Katrina

There is an equivalent to a Physician's Desk Reference here but I can't think of the name of it.  Maybe someone else can remember what the book is called.

Your GP will be able to tell you, especially if you give the generic name, not the brand name.

Ok, I will do that...the woman yesterday had never heard of it so I wasnt sure if it would be that easy. Thanks!

just got it today...
beconase