Calendula
Calendula or rather its flower petals have been used in medicine for at least 8 centuries. Calendula is native to Mediterranean region, but is now grown as a pot plant throughout the world. It is often called marigold, but not all of these household plants are members of the calendula family.
Calendula contains many flavonoids, which are known as plant-based antioxidants that protect the organism against free radicals. In spite of numerous studies, researchers are not sure what active ingredients in calendula are responsible for its curing properties, but this plant has anti-inflammatory, antiviral, and antibacterial properties.
As a rule, calendula has been used to treat stomach upset and ulcers, but there is no proved evidence that this plant is effective in these cases. Today in Germany doctors often prescribe topical applications of calendula. This plant helps to heal wounds (perhaps, because it increase blood flow to the affected area), and the dried petals of the plant are used to make tinctures, ointments, and washes for the healing of burns, bruises, cuts, and minor infections.