Pills and fat women.

According to the survey in America, 11% of women aged 15-44 years ever used emergency contraception pills at least once. Photo: Word Press

Some contraceptive have limited weight towards the user. Such, HRA pharmaceutical-company produced an emergency contraceptive sold worldwide, recommended their products, the more likely will have no effect for women who weighed more than 80 kg.

HRA also noted with the women 75 kg heavier than that, they can see branded pill Norlevo of less effective than normal. The pharmaceutical company is expected to give in more warnings in the instructions for use of products from next year.

Norlevo pill containing levonorgestrel, substance a synthetic hormone to prevent the fertilized egg to be drinking if within 72 hours after sexual intercourse is not safe. According to the NBC News Agency, pills Plan B one-step sells popular in America also uses similar active substances.

The Bureau of food and Drug Administration (FDA) is considering whether the product Plan B may need a similar warning or not, due to this pill has been approved for sale to the market without testing on the weight.

NBC Studios has cited a number of studies show that emergency contraceptive pills, more and less effective for women heavyweight and the sisters has the ability to "sticky elected" fourfold higher than the lighter users. One other contraceptive also pushed the fat women to the risk of unintended conception high 3 times the same you have weighed on average.

The contraceptive drug maker Plan B one-step refused to comment on the report . However, they expressed skepticism about the conclusions "similar biological characteristics between contraceptives with the kind of firm HRA.=