Vanessa
you will need a prescription for the cream. Here is the one I have been using. I am currently waiting for the new one to come from the mail order compounding pharmacy - it will have the ketamine increased to 10%. I have read online that most people used it at more than I had been, so mentioned it to my Dr. - for my next refill he had no problem upping the % for me to try.

2% amitriptyline hydrochloride
2% bupivacaine hydrochloride
5% gabapentin
5% ketamine hydrochloride
5% ketoprofen
2% lidocaine
in Lipoderm (I think) base. They switched bases a couple times trying to find one that allowed the medication to absorb better into the skin.

I think most people use just lidocaine and ketamine. My doctor got this "recipe" from a pharmacy that makes various creams for RSD, and he thought it would workt he best for me. I've read about people using baclofen in theirs, and I'd like to try having it added, but he thinks there are enough things in it. I can't take amitriptyline or gabapentin very well orally, but it does not bother me in the cream.