NWHNのMay 23, 2007付News Alertによれば、避妊ピルとしては月経を完全に止めてしまう作用をもつLybrelという月経抑制剤をFDA(米食品医薬品局）が認可したそうです。NWHNに登録すれば、英文で情報を得られます。
NWHNは次のような団体です。
NWHN is a membership-based organization supported by thousands of individuals and organizations nationwide. We analyze and monitor health issues, identify abuses and make change by exposing the abuse and catalyzing grassroots action. NWHN is a voice for women and a Network for change...all without the financial support of pharmaceutical companies, tobacco companies or medical device manufacturers. Our member support is crucial to continue our work. Join the Network or make an additional contribution today!
サイトはこちらにあります→http://www.nwhn.org/
