One of Motherlove's 3 guiding principles, or pillars as we call them, is 'Safe and Effective'. We take great strides to ensure that we are providing only the safest ingredients to our consumers. Motherlove uses a number of sources to confirm the safety level of our herbs, including the American Herbal Products Association's Botanical Safety Handbook and the German E. Commission Monographs. In addition to that, we only source USDA Certified Organic or wildcrafted herbs. We have a full-time Quality Assurance Department based in our Fort Collins, Colorado facility that is fully dedicated to monitoring our herbal quality. If you have further questions about our products, simply give us a call or email us.