The two pills should be taken 12 hours apart, for example one pill at 6am and the remaining tablet at 6pm. Although a woman can take the 2 tablets as single dose, taking 1 tablet in 12-hour intervals reduces the risk of nausea and vomiting. Lydia PostPil has the following side effects: there may be changes in menstrual flow and/or duration if more than 2 tablets are taken in a month. Another side effect includes vomiting. The great thing about the Lydia Postpil is: It lowers the risk of getting pregnant by up to 90% You can take it up to 72 hours after having unprotected sex, but the sooner the better It is safe Please note: Lydia Postpill is an emergency contraceptive that prevents pregnancy from occurring in the first place, is it not an abortion method, nor is it for long-term contraceptive use. Lydia Postpil can be found in all pharmacies and chemical shops.