For the first month it was OK, no
side effects other then some loss of libido. After talking with doc about it he changed it to another one with levonorgestrel instead of dienogest.
After 2 days of taking it I started experiencing extreme thirst, anxiety, palpitations, minor blood sugar rise and hard to sleep (since thirst was waking me up several times). I endured it for 1 week and went to my gynecologist to talk about it.