Herbal medicine is older than any other type of healthcare. Every culture has taken advantage of herbs and their benefits. Herbal medicine began with primitive cultures using different plants for shelter, clothing, and medicine. Man learned medicinal benefits of plants through trial and error methods in addition to observing animals. Man’s knowledge of herbs and their medicinal uses advanced over time. Herbal pharmacopoeias were developed by different tribes. Even the pharmacopoeia of scientific medicine in the 20th century was developed primarily from native herbal lore.