Daiichi Sankyo said Thursday that it would start over-the-counter sales of an emergency contraceptive pill on Feb. 2, marking the first time that such a pill will be sold without a prescription in Japan.

There will be no age restriction for purchasing the drug, Norlevo. For safety purposes, the pill must be taken in the presence of a trained pharmacist.

Norlevo is effective in preventing pregnancy in some 80% of cases if taken within 72 hours of sexual intercourse. Its suggested retail price is ?7,480 a pill.

In October, the health ministry gave approval for Norlevo producer Aska Pharmaceutical to make the drug available for OTC sale.