Zheng tian wan is a classic and effective formula for migraine. Usage and Dosages: As an herbal supplement take the contents of one sachet 2 to 3 times a day.Warning Do not use if you are pregnant. Packing: 10 sachets in each box. Each sachet contains 6g small pills Ingredients: Szechuan lovage root; Angelica root; Chinese wild ginger; Ledebouriella root; Prepared aconite root; Self reliant root and Safflower flower