A French pharmaceutical company has found the morning-after pill may not work for women weighing over 80 kilograms, and start losing effectiveness on those who weigh more than 75 kilograms.
European brand, NorLevo, contains the same active ingredient as a range of Australian emergency contraceptive pills, leading the Therapeutic Goods Administration (TGA) to conduct its own investigation.
As of 2014, the company will print weight warnings on the packaging and recommends that women weighing over 75 kilograms discuss emergency contraceptive alternatives with their doctor.
Read more at Edinburgh University