Dear Dr. Heller:
I am on Depo-Provera and I wish to know as soon as possible.
There are many studies suggesting that many psychiatric medications can make oral contraceptives less effective - usually dealt with by using higher doses. Depo-Provera is an excellent choice in this case.
I always recommend extra precautions to prevent against pregnancy, so sometimes a higher dose is needed. Other options include more frequent dosing of Depo-Provera or using additional pregnancy prevention methods.