Witch hazel is a plant. The leaf, bark, and twigs are used to make medicine. You may see a product called witch hazel water (Hamamelis water, distilled witch hazel extract). This is a liquid that is distilled from dried leaves, bark, and partially dormant twigs of witch hazel.
Witch hazel is taken by mouth for diarrhea, mucuscolitis, vomitingblood, coughing up blood, tuberculosis, colds, fevers, tumors, and cancer.