Have you talked to a Dr. about it? I think it varies from person to person. I had full series (16x) in Summer '92 and knocked me on my a-- and the lowest depression ever. (Think I got chronic fatigue in hospital and arms/legs became very heavy and hard to take shower, shave. Very fatigued. All I did was lay in my bed.) It did slow down my incredible racing thoughts by about 15% - just enough for me to realize how sick I had been going into it. Dr. ten yrs ago told me that ECT benefits bipolar persons more than unipolar depressed persons.