There are no scientific studies showing harmful side effects from Akavar. However, researching people who have taken in and commented on it have reported nausea and upset stomach.
Generally the reports of nausea and upset stomach are caused from taking Akavar on a completely empty stomach or with not enough water or milk. For those who have this problem try taking Akavar with milk rather than water and eating some crackers or bread.
There are no known side effects of Akavar (except weight loss), but some have complained of upset stomach and nausea when taken on an empty stomach. This can generally be remedied by taking Akavar with milk and possibly some bread or crackers.