Possible side effects

The most important 'side effect' is: much less or no blood loss during menstruation.

Because no female hormones (estrogen and progesterone) are administered as in 'the pill', expect this the researchers that known side effects of 'the pill' do not occur when using mifepristone 50 mg.

Previous research with mifepristone 50 mg shows that there is a small risk(less than 1 in 20 people) of mild complaints of hot flashes, headache nausea and fatigue.