Over 80% of people who purchased a morning-after pill as part of an over-the-counter sales trial have said that they would want to again buy the emergency contraceptive at pharmacies without a doctor's prescription, according to research by a national pharmacist group.

Although women have been able to get the medication with a doctor's prescription, over-the-counter purchases at pharmacies only began in November on a trial basis, in order to allow better access to the pill for women who urgently need it.

If a morning-after pill is taken within 24 hours of sexual intercourse, its effectiveness at preventing pregnancy is 95%. The rate drops over time, and it is only deemed effective for up to 72 hours.