Calendula is a plant that has been used for centuries as an ornamental, as well as culinary, cosmetic and medicinal purposes. Calendula can be taken orally or applied topically. A powerful antioxidant, it is amongst the strongest of antiviral herbs. An anti-inflammatory, it calms muscle spasms, treats constipation, helps heals wounds, is antimicrobial, antiviral and improves oral health. Also makes a great natural yellow dye.