Using the oil can also result in serious side effects, like nausea, vomiting, muscle cramps, diarrhea, and irregular heartbeat. For people who are pregnant, castor oil can also cause early cramps. A ...

According to the U.S. Food and Drug Administration, castor oil — which is pressed or extracted from castor beans — is approved for just one medicinal use: as a laxative. Here’s what castor ...