Side effects with CBD are rare but possible. The most common side effect is dry mouth. Significantly less common is diarrhea. It can cause some drowsiness at high doses, as those levels of CBD are often used to help people sleep.
Even if one doesn’t experience side effects, CBD could interact with any other medications they’re taking, leading to altered levels of those substances. This is because CBD uses many of the same enzymatic pathways in its metabolism as many other medications. Therefore, check with your physician before trying