Common herbs with significantly high tannin content:
• Acacia catechu (Catechu wood extract ) 220-500,000ppm  儿茶
• Agrimonia eupatoria (Agrimony plant) 50,000-80,000 ppm 仙鹤草
• Alnus glutinosa (Black Alder Bark) 200,000 ppm 榿木
• Arctostaphylos uva-ursi (Bearberry Plant) 60,000-200,000 ppm  熊果, 熊葡萄, 熊莓.
• Areca catechu (Betel Nut Seed) 150,000-250,000 ppm 檳榔
• Camellia sinensis (Tea leaf ) 90,000-130,000ppm 茶葉
• Coffea arabica (Coffee Seed) 90,000 ppm
• Geranium maculatum (Cranesbill ) 100,00-125,000ppm 斑点老鹳草
• Hammamelis virginiana (Witch Hazel) 150,000 ppm 金縷梅, 金鏤梅.
• Heuchera americana (Alum root) 90,000-200,000ppm 美洲矾根 
• Ilex paraguariensis (Mate Leaf) 40,000-160,000 ppm 巴拉圭茶
• Juglans nigra (Black Walnut Fruit) 147,000 ppm 黑胡桃
• Krameria triandra (Rhatany Root) 80,000-200,000ppm 秘鲁拉坦尼
• Myrica cerifera (Bayberry bark) 蠟楊梅
• Polygonum bistorta (Bistort rhizome) 115,000-120,000ppm 拳參
• Potentilla erecta (Tormentil) 洋萎陵菜
• Pinus sylvestris (Scotch Pine Bark) 169,000 ppm
• Punica granatum (Pomegranate Rind, Root Bark) <280,000 ppm
• Quercus alba (White Oak Bark) 78,500-200,000 ppm
• Quercus infectoria (Oak galls) 400,000-700,000ppm
• Rubus idaeus (Red Raspberry Leaf) 100,000-120,000 ppm
• Rubus villosus (Blackberry root bark) 100,000-130,000ppm
• Rumex acetosella (Sheep Sorrel Root) 80,000-140,000 ppm
• Rumex crispus (Curly Dock Root) 30,000-60,000 ppm
• Salix alba (White Willow Bark) 50,000-70,000 ppm
• Thymus vulgaris (Common Thyme Plant) 80,000-100,000 ppm
• Tsuga canadensis (Eastern Hemlock Bark) 100,000-150,500 ppm 加拿大鐵杉

• Vaccinium myrtillus (Bilberry Leaf, Fruit) 60,000-200,000 ppm 越桔, 越橘