Also known as the pot marigold, the calendula is a flower that's been used in both food preparation and medicinal remedies for centuries. Dried or powdered calendula flower petals are typically made into tinctures, liquid extracts, infusions, ointments or creams. Calendula is usually used externally and not taken orally, except in very dilute preparations, according to the University of Maryland Medical Center.
Preventing Radiation-Induced Dermatitis
Applying lotion containing calendula powder may help to prevent dermatitis in people who are undergoing radiation treatment for breast cancer. The University of Maryland Medical Center cites a study of 254 breast cancer patients that found the women who used calendula lotion were less likely to report moderate to severe dermatitis than those who used trolamine lotion. Calendula has anti-inflammatory and immunomodulator actions that help to significantly reduce the chances of developing severe dermatitis at the radiation site, compared with cancer patients using standard medications, according to the University of Michigan Health System.
Healing Burns and Wounds
Ointments, tinctures and washes made from calendula powder can help to promote healing of minor burns, wounds and bruises. "Animal studies show that calendula does appear to speed wound healing, possibly by increasing blood flow to the wounded area and by helping the body to produce collagen proteins, which are used to heal skin and connective tissue," says the University of Maryland Medical Center. Calendula also has antiseptic, anti-inflammatory and antiviral actions that can prevent infections in cuts and burns, says the University of Michigan Health System.
Relieving Ear Pain
Calendula may also help to treat ear infections. Ear drops containing calendula powder help to relieve pain associated with otitis media, says the Georgetown University Medical Center. In fact, the commonly-used naturopathic formula called Otikon contains calendula. Although calendula-containing ear drops haven't shown any adverse effects, "the studies are not of sufficient quality to determine whether calendula is truly effective," notes the University of Maryland Medical Center.
Treating Skin Irritations
Calendula can also help to treat other skin irritations in addition to dermatitis and burns or wounds. Calendula has been used historically to treat a wide range of skin diseases and irritations, such as skin ulcerations, eczema, insect stings, poison ivy and poison oak dermatitis, as well as sore nipples from breastfeeding, says the University of Michigan Health System.
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