The Star Wars actress revealed that she turned to the process because she suffered severe bouts of depression after years of being being addicted to alcohol and drugs.
"I didn't want to do it for years. They wanted me to do it before, because I was in a depression, which was medication-proof," she said.
"You don't have a convulsion anymore, so it should just be called electrotherapy. But it worked so well, I highly recommend it, even if you don't need it!"
Other celebrities said to have used the treatment include comedy actress Caroline Aherne.