Hawaii Pharm Quina Liquid Extract, Quina (Cinchona officinalis)

What the brand says

Sold as “Hawaii Pharm Quina Liquid Extract, Quina (Cinchona officinalis) Tincture, Herbal Supplement, Made in USA, 2x32 fl.oz”

As a medicinal herb, Quina (Cinchona officinalis) is also known as Jesuit's bark or Peruvian bark. The bark is stripped from the tree, dried, and powdered for medicinal uses. The Quina bark contains a variety of alkaloids.