Researchers in Spain recently published (May 2015) their findings that at very high concentrations carvacrol and thymol can cause oxidative damage in intestinal cells, but at low levels are highly effective antioxidants.* This revolutionary finding supports the notion that essential oils are most effective in small amounts, and lose their value, and may even be harmful, in large amounts. Oregano essential oil is a good source of carvacrol, and Thyme essential oil is a good source of thymol. Learn more about proper concentration in this post: Recommended Ideal Amounts.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.