Oils from marigolds used to soothe skin
Calendula officinalis -- popularly known as the marigold -- appears in Egyptian hieroglyphs dating back nearly 7,000 years. The plant’s Latin name dates to Roman times, when early botanists noted that it appeared to bloom anew on the first day -- or calend -- of each month. Today marigolds grow worldwide, and oils from the flower appear in cosmetics and creams for dry skin, stings and other skin ailments.
*
Uses: The plant has been used to treat ulcers, HIV infection, ear infection pain, sore throat and menstrual cramps, though there’s little solid evidence to support these uses. Calendula preparations are applied topically to speed healing of mouth sores, hemorrhoids, acne, burns and varicose veins.
Dose: Calendula comes in tablets, ointments, tea and liquid drops, which can be used to make a mouthwash. Oral doses recommended by manufacturers vary widely. Ointments and liquid drops should be applied three times daily. Tea or mouthwash used for sore throat or mouth sores should also be used three times a day.
Precautions: The herb can cause a rash or more severe allergic reaction in people sensitive to ragweed, daisies and chrysanthemums, calendula’s botanical relatives. Pregnant women should avoid taking calendula because it may cause the uterus to contract. The herb may also amplify the effects of drugs that aid sleep.
Research: Few rigorous, large-scale studies have examined calendula’s effectiveness. However, laboratory and animal studies provide strong evidence that oils from the flower have antibacterial properties and can help heal wounds when used topically. There’s some evidence that calendula drops may fight ear pain in children with ear infections. A recent clinical study found that calendula was effective at preventing dermatitis in breast cancer patients undergoing radiation therapy.
Dietary supplement makers are not required by the U.S. government to demonstrate that their products are safe or effective. Ask your healthcare provider for advice on selecting a brand.
*
-- Elena Conis