Sronyx
"I took this medication for 2 years and found little trouble with it. Occasionally I would have longer periods, but more often than not I wouldn't have one at all. On average, I'd say I had a period every 2 months and every 4th period lasted for a week. I took this as an alternative to most birth controls, which were giving me migraines. This one only gave me a slight headache around the last couple days of the inactive pills and the first couple of days starting a new month, but nothing too terrible."