Yes, our herbs and products are tested for arsenic, cadmium, lead, and mercury using independent third party laboratories. All of our products are within the safety guidelines stipulated by the American National Standards Institute/National Sanitation Foundation International Dietary Supplement Standard 173 (ANSI 173) and AHPA guidelines.
It is very common for natural products, including the food we eat, to contain trace amounts of heavy metals, which occur naturally in the environment and are present in water, air, and soil around the world. It can be hard to find a naturally grown product that does not contain some small level of heavy metals. However, this is not the same as being toxic or dangerous, and all of our products, when taken according to the suggested use on the bottle, are well within the safety guidelines stipulated by ANSI 173.