Having emergency contraception available preemptively doesn't change pregnancy or STI rates

of unprotected sex or STI transmissions, nor did it alter the subjects' normal contraceptive use. The only major difference was that women with the medicine took the pill 13 hours sooner and were more likely to use the pill at all.

“Some women may not use emergency contraception when needed, even if they have it in advance. Like condoms, emergency contraception will not work if it is not used,” says lead researcher Chelsea Polis of the Johns Hopkins Bloomberg School of Public Health. “Women should still be given information about and easy access to emergency contraception, because it is a safe and effective way to prevent unintended pregnancies for individual women who will use it when needed.”

For more information, check out the full study in The Cochrane Library: Polis CB, Grimes DA, Schaffer K, Blanchard K, Glasier A, Harper C. Advance Provision of Emergency Contraception for Pregnancy Prevention (Review). Cochrane Database of Systematic Reviews 2010, Issue 3. Art. No.: CD005497. DOI: 10.1002/14651858.CD005497.pub2.

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A new study reported in The Cochrane Library found that giving women emergency contraceptive drugs before they're needed doesn’t reduce pregnancy rates.

Emergency contraception works up to five days after unprotected sex. However, some countries don’t offer these drugs over the counter and it may be difficult to arrange a doctors appointment in time. To combat these problems, some have advocated providing sets of emergency contraceptive pills to women in advance. Opponents of this plan have argued that making these pills available preemptively would encourage using these drugs as a primary contraceptive. This study seems to invalidate both opinions.

The research covered 11 trials with 7,695 women from the US, China, India, and Sweden. The study also found that having these emergency contraceptives available before hand didn't affect rates

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