Verbascum Spp. Respiratory System USDA Organic Herbal Supplement Mullein Blend Liquid Extract Certified Organic by Organic Certifiers Gluten-Free Fresh Herb / Menstruum Ratio 1 : 2 Our Mullein Blend extract is a proprietary mix of the Certified Organic leaf and flower of Verbascum spp. plants grown on our own farms in southern Oregon. The leaf and flower are hand-harvested each summer at their optimal peak and are extracted fresh the same day they are harvested. Shake well before using. Add one full squeeze of the dropper bulb to 2 oz. of water or juice, 2 to 5 times per day. Best taken between meals.