I had a lot of the negative side effects listed above by others i...

I had a lot of the negative side effects listed above by others including depression, fatigue, trouble concentrating, aching body, restless nights, irritability, my arms and legs falling asleep and so on. Then I found out that i had a vitamin b deficiency - a lot of these symptoms are also symptoms of vitamin b deficiency. Yaz along with other oral contraceptives interferes with the bodies ability to absorb vitamin B. Taking vitamin B supplements a few times a day has helped me. They are water soluble so you do not have to worry about overdosing- if you take more than your body needs you will just pee out whatever is extra.