I was diagnosed with major depression and after trying different meds, my doc and I decided to try Prozac. I have been on it for the last 4 weeks. First week I felt like I was on speed, then my energy level started to get down and my anxiety got worse than before. After a research about SSRI induced fatigue , I've found out that fluxatine may cause magnesium deficiency. As I know, magnesium is a very important mineral for myriad of chemical processes in body, including neurological ones and deficiency of this mineral cause fatigue and anxiety. Is it possible that fatigue I'm feeling is due to magnesium deficiency caused by fluxatine? If yes, could it simply be solved by taking magnesium supplements?