The efficacy of Verbena is to promote blood circulation and dissipate blood stasis, diuresis and swelling, and stopping malaria, etc. It is mainly used for treating obstruction in the abdomen, sore throat, malaria, damp-heat jaundice, edema and other conditions. Vervain is the dried above-ground part of the plant Verbena, which is cool in nature, bitter in taste, and belongs to the liver and spleen meridians. Verbena has the effects of promoting water retention, removing toxins, activating blood circulation and dissipating blood stasis, and stopping malaria. It is used for treating obstruction in the abdomen, sore throat, malaria, jaundice, edema and dysmenorrhea. The adverse reactions and contraindications of Verbena officinalis are not clear at present. Note that pregnant women should take it with caution. If you need to use Verbena officinalis, it should be applied under the guidance of a traditional Chinese medicine practitioner’s diagnosis, and should not be taken on its own to avoid causing adverse consequences.