Solaray's Black Walnut Hull 500mg is a high-quality oral supplement that upholds our mission to help you Live Brighter. Backed by science and rooted in nature, this product is crafted from carefully selected ingredients that align with our commitment to wellness. As with all our supplements, it is lab-verified in our state-of-the-art labs by our team of experts, ensuring its efficacy and safety. Born in 1973 and made in Utah, Solaray continues to support your wellness goals with our range of over 700 products. Embrace the Solaray difference today. California Warning.