iPledge . . . not to have sex (or, if I do, to use 2 forms of birth control)

This article in yesterday's NYT describes the measures required of women who wish to take Accutane, a powerful anti-acne medication. The medication can cause severe birth defects, so the FDA and the drug's manufacturers have agreed on mandatory prescribing rules. To have their prescriptions filled, women must either (a) promise--in writing--not to have sex with a man (or men), or (b) use two forms of contraception, one of which must be deemed "highly effective," such as Depo-Provera injections. They must also document this on a website, iPledge. Others who are prescribed the drug but who cannot become pregnant (including men) are also required to register.