"i was on a different birth control prior to taking this birth control. the one prior caused heavy bleeding that was unmanageable. that bleeding lasted 5 weeks before i finally broke down and told my doctor how ridiculous it was. he prescribed sprintec. with in 2 pills the unmanageable bleeding slowed to regular bleed and by 4 it had stopped. i have had no side effects so far and hope it continues to work for me."