A thorough report from the World Health Organisation concluded that CBD and CBD oils are non-toxic, perfectly safe for regular human consumption and have no potential to cause addiction. However, CBD is still in early stages of research so it is best to listen to your body. The only CBD Oil Side Effects that have been reported to us from customers, is feeling tired when taking too much or potential gastrointestinal upset in sensitive individuals, but this can usually be overcome by reducing the dose and finding what works best for you.