The popularity of the morning-after pills grows continuously, but it turns out the pills aren’t effective on women who weigh more than 176 pounds.
The shocking information comes from the manufacturer of the European version of Plan B. The company has even indicated on the packaging that pills used for prevention of pregnancy may not be effective in all cases if the women weight more than 165 pounds and they are absolutely ineffective if the women are over 176 pounds.
A study conducted in 2011 in the University of Edinburgh found that obese women are 3 times more likely to become pregnant after using emergency contraception than women of a normal weight. In addition, the study concluded that the effectiveness of the pill is even lower if it is made of lenovorgestrel, the hormone which is used in most morning-after pills in the USA.
Based on the results of the study, the manufacturer has decided to include the information on the packaging within Europe in order to warn women who use the pills that is a high chance the product won’t work for them.