Morning after pill okay regardless of weight

The EMA Committee for Medicinal Products for Human Use (CHMP), who conducted an efficacy review of emergency contraceptives containing levonorgestrel or ulipristal, said that the limited data available do not support with certainty the conclusion that their contraceptive effect is reduced in women with high bodyweight. 

The efficacy of the drugs was called into question in November last year when the manufacturer of NorLevo (levonorgestrel 750mcg) discovered that it began losing effectiveness in women who weighed 75kg, and was not at all effective in women who weighed over 80kg. 

Previous findings from the University of Edinburgh showed effectiveness was affected by BMI, but even more strongly by weight, irrespective of height. It found overweight and obese women taking levonorgestrel were more than twice as likely to fall pregnant as those taking ulipristal, which is not available in Australia.

The EMA ordered the manufacturer to update

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