The mifeprex doesn't usually have any side effects. The side effect profile is tied to the second set of pills that are taken, called misoprostol or cytotec. Misoprostol can cause gastro-intestinal effects of nausea, vomiting, or diarrhea. It can also cause sensation of warmth or cold, fevers, and chills. Remember, some people may not experience any of the effects, while others may experience some or all of them. All of these side effects are normal, and are no cause for alarm. Usually, they are very short lived and go away within a few hours. Most people will have only minimal side effects, if any, and majority will not require any of the treatments mentioned above, although they remain an option.