How do you counsel patients regarding contraception use while taking mycophenolate/mycophenolic acid?

There are some data that mycophenolate mofetil may decrease the effectiveness of oral contraceptives. In patients who are taking MMF and taking oral contraceptives as their form of contraception, an additional form of contraception is preferred. However, this is not an absolute recommendation.

Mycop...

I agree with Dr. @Dr. First Last. I would add:

1. The same goes with OTC levonorgestrel (Plan B): it may be less effective when taking mycophenolate mofetil (MMF). Hopefully, a patient MMF would not get pregnant in the first place.
2. Of course, I have all patients who can potentially get pregnant do REMS...