Vervain is also called:

• American blue verbena
• Simpler’s joy
• Holy herb
• Mosquito plant

  Vervain regained popularly in the 1930s as one of the 38 flowering plants used in a homeopathic tincture called Bach Flower Remedy, variations of which are still sold today. Among its purported benefits, people use vervain to treat:

  nervine, repair nerves.
  • Headaches
  • General aches and pain
  • Insomnia
  • Digestive dysfunction
  • Upper respiratory tract symptoms
  • Urinary tract infections (UTIs)
  • Depression and anxiety
  

  vervain essential oil was tested against two fungi and seven bacteria. It inhibited the growth of all microorganisms in a dose-dependent manner — meaning that the higher the dose, the higher the antimicrobial effect
  Vervain is a popular remedy due to its multiple plant-beneficial compounds. Some of its benefits include antitumor effects, nerve cell protection, anxiety- and convulsion-reducing properties, and antimicrobial activity.