Are you getting enough magnesium? I've got bipolar depressive type and I actually found out that I also have a harder time processing B vitamins than the general public, which can lead to bad depressive episodes. B vitamins plus folic acid/folate help for me. There is also a med you can get that will help your body process it better, but unfortunately its super cost prohibitive here in the states. May be worth looking into if you live somewhere that health care isn't a for profit industry. If nothing else, it wouldn't hurt to get your levels checked. The test that I took that told me that was a mouth swab, part of a larger test that analyzes your biochemistry and determines which medications work best for you and which are ineffective. Super glad I did it since it took away all the trial and error that usually comes with finding meds that work. Overall, sorry that you've been having a hard time, make sure you make time for the things that make you feel better, cause ya gotta put yourself first.