I don't know anything about the science behind this, but the skeptical hairs on the back of my neck jump up & down screaming WT— any time a "doctor" sells a product out of his/her office.

The typical answer is something like, "Because I've researched this, and this brand is better than all the others because... yadda, yadda, yadda..." and oft-times when I've looked for that brand elsewhere, it turns out it's a product ONLY marketed through "alternative medicine" practitioners (i.e. you can't get it anywhere else that doesn't get a HUGE markup) which ALSO causes my neck hairs to bristle, only by this time they're screaming, "RUN!"

I think I would ask your compounding pharmacist about it, and if s/he could add it (prescribed by your doctor) to your other cream.

Doc