What is Luteolin Luteolin is a common flavonoid that exists in many types of plants including fruits, vegetables, and a variety of herbs. Plants containing luteolin have been used in Chinese traditional wellness practices for centuries. Supplementing with Luteolin: There are now many ways to enjoy the benefits of this antioxidant with a nutritional supplement. The most common supplement forms include powder, liquid, tablets, capsules, gummies, and more. Looking for the best source of Luteolin for a well-balanced routine Horbaach Luteolin Complex: Get superior support with Horbaach Luteolin Complex! This innovative complex features a premium blend of plant flavonoids, supplying 50 mg of Luteolin plus 50 mg of Rutin for added support. Our gluten-free and non-GMO formula is lab tested for purity and potency, matching our exceptionally high standards of quality.