This study prompted HRA Pharma, the company that manufactures the European version of Plan B, Norlevo, to revise it's packaging insert to read that the pregnancy prevention medication is not always effective for women over 165 pounds, and is completely useless for women who weigh more than 176 pounds. They still have to update their website with this very important information.
This is very scary news indeed, as 11% of sexually active women have reported using emergency contraceptives (dramatically more than a decade ago) and also because a significant number of women in America weigh more than 165 or 176 pounds, which means the "morning-after" pill will not be effective for them.
American manufacturers of similar pills like Teva, which produces Plan B, wouldn't comment on these findings or on whether or not they will also revise their package information. Major manufacturers would have to note it on their packaging first before generic brands could do the same, according to the FDA.
