Goldenseal, or Hydrastis canadensis, contains berberine and is used to treat various health conditions, including eye infections, ulcers, colds and sore gums. However, there is little to no scientific evidence that the goldenseal plant has any true health benefits.
Goldenseal is a small plant that has two jagged edged leaves, small flowers and fruit that resembles raspberries. It grows wild in shady areas throughout northern United States and southern Canada, but, due to overharvesting, is mainly grown on farms as of 2015.
Goldenseal is considered safe for adults in small, short-term doses. In rare cases, it causes nausea and vomiting. It is not safe for infants, young children, or pregnant or breastfeeding women to take goldenseal.