Calendula Flowers 1oz The flower is used to make medicine. Calendula flower is used to prevent muscle spasms, start menstrual periods, and reduce fever. It is also used for treating sore throat and mouth, menstrual cramps, cancer, and stomach and duodenal ulcers. Calendula has also been used for measles, smallpox, and jaundice. Calendula is applied to the skin to reduce pain and swelling (inflammation) and to treat poorly healing wounds and leg ulcers. It is also applied to the skin (used topically) for nosebleeds, varicose veins, hemorrhoids, inflammation of the rectum (proctitis), ear infection, gum disease, peeling lips (exfoliative cheilitis), diaper rash, vaginal yeast infection, and inflammation of the lining of the eyelid (conjunctivitis). Essential oil of calendula has been used as an insect repellant. Don’t confuse calendula with ornamental marigolds of the Tagets genus, which are commonly grown in vegetable gardens. How does it work? It is thought that the chemicals in calendula help new tissue grow in wounds and decrease swelling in the mouth and throat.