Log InDelta 8 THC is a compound that is found in trace amounts in hemp or cannabis. It is similar to Delta 9 THC, which is well-known for its ability to cause euphoria and sedation. When people refer to THC, they usually mean Delta 9. However, Delta 8 is increasing in popularity as it offers many of the same effects but is less potent. Hemp-derived Delta 8 THC is legal in some states where Delta 9 is banned.