Since the middle ages, herbalists have noted the emollient properties possessed by mullein (Verbascum thapsus) leaves and flowers and have traditionally used the herb to help soothe the respiratory system.* Alvita Mullein Tea is made with premium-quality, organic mullein leaves and flowers, and produces a slightly astringent flavor and aroma. Preparation: Place one tea bag in a cup and add 8 oz of boiling water. Cover and steep for 4 minutes. Gently squeeze tea bag and remove. Directions for use: We recommend 3 cups daily. Add sweetener if desired Naturally caffeine free