Google it, or look at the packet, it has more than enough info. I really don't know anything about trinessa or pill in general.

TriNessa: I am an 18 year old girl. I have loving parents, a great home, good grades, sport teams, wonderful friends, and an incredible boyfriend. Nothing is wrong with my life right now and nothing is even complaint worthy. I started taking TriNessa not for sex but to control my period because I was getting it twice a month and was therefore iron deficit. Then I started feeling a little down, not motivated, sad. Then I started to get this overwhelming sense of doom, like my life was on an extreme downturn, but nothing had changed. I don't have any history of depression but I would have been clinically diagnosed as depressed because I would go to bed crying and wake up crying and had this sense of hopelessness and despair. I almost asked my boyfriend to take a break even though he is the most amazing guy ever until I figured out that it was the trinessa. there is something seriously messed up with this medication and I would advise all to use this with extreme caution.