Emergency contraceptive pills one loaded and two loaded effect is almost the same, their main difference is that the dose is different, one loaded dose is 1.5 mg, two loaded dose is lower, a piece is 0.75 mg, two tablets is also 1.5 mg, so eat one loaded and two loaded effect is the same. The main component of the emergency contraceptive pill is levonorgestrel, which can inhibit ovulation in the body, preventing the fertilization of the egg, used for emergency contraception, the sooner you take the pill, the better. One tablet is taken at once, and two tablets are taken twelve hours later. Since the hormone content of both drugs is the same, the effect is similar after entering the body. As the dose of one tablet is higher, some women may have gastrointestinal reactions, such as nausea and vomiting. A two-tablet pack has a lower dose, so the gastrointestinal reaction will be relatively lower. Emergency contraceptive pills are used when contraceptive methods fail and cannot be used as a regular contraceptive method, and regular use of the pills may lead to menstrual disorders in women.