depression
"My biggest issue on Brintellix was frequent mood swings. Even at the lowest dose of 5mg, I called my psychiatrist to report that within the first week, my mood would suddenly drop considerably for hours at a time on and off. 



At 10mg, I became very irritable on this medication in addition to the mood swings. At 20mg, the mood swings became so dramatic my therapist told me that my symptoms reminded him a lot of his patients who have bipolar disorder. I would cry at almost anything for no reason.



The only upside of this medication for me was that it indeed did not give me any sexual side effects as advertised."