Inventor: Barr Laboratories
For years, women on birth control who didn't want to worry about bleeding problems on vacation or while participating in sports have been skipping their period by starting their next 28-day supply of pills one week early. But women can regularly skip three periods in a row with Seasonale, a 91-day pill pack with 84 active tablets followed by seven inactive pills. More than 40 years since the original Pill went on sale, we'd say it's about time.
Availability: Now, $1 per pill (or less with insurance)
To Learn More: barrlabs.com