For more than 800 years, the calendula flower has been used therapeutically, primarily to treat ulcers and other gastrointestinal complaints. Today, the use of the herb has evolved to include treating wounds, burns and bruises because of its antimicrobial and anti-inflammatory properties, the University of Maryland Medical Center reports. Before you use it to treat swollen or infected skin, check with a doctor who can tell you how to use it safely.
Medical Evidence
While studies have not yet shown a conclusive benefit to using to treat swollen, infected skin, chemicals in the plant may be of some benefit. In studies conducted on animals, calendula applied topically does appear to help wound healing, possibly allowing more blood to flow to the affected skin and allowing the body to increase production of collagen to help heal the body's tissues, according to the University of Maryland Medical Center. However, more research is needed to show a conclusive benefit for using calendula to treat infected and inflamed skin. Do not use it to treat your condition without first consulting a doctor who can advise you of how to use it safely.
How to Use It
If you want to use calendula to treat swollen and infected skin, you should use an ointment containing between 2 percent and 5 percent calendula, the University of Maryland Medical Center reports. You can apply it to the affected area three to four times per day. However, do not apply it to an open wound. Instead, carefully apply it only to the swollen skin around a cut or scrape. Store products containing calendula in a place not exposed to moisture and light, and throw them away after three years. Don't use the supplement without first consulting a knowledgeable healthcare practitioner.
Side Effects
Most people can use caledula topically without experiencing any negative side effects, although skin rashes and irritation can occur, the University of Michigan Health System reports. Adverse skin reactions more commonly develop in people allergic to related plants in the Asteraceae/Compositae family, MedlinePlus reports. These plants include ragweed, marigolds, daisies and chrysanthemums. You should always check with a doctor or medical care provider before using calendula so you are aware of its effects.
Warnings and Precautions
Women who are pregnant should not use calendula either internally or topically because it may increase the risk for a miscarriage, according to MedlinePlus. Also, because it can alter the menstrual cycle, you shouldn't use it if you are trying to conceive. When used internally, the herb has sedative effects, so you should use it if you also take sedative medications such as lorazepam, phenobarbital or clonazepam. Because of the sedative effects, you should avoid calendula for at least two weeks before undergoing a surgical procedure because it can interfere with anesthesia. Never use calendula without first consulting a doctor who can advise you of whether it is safe for you.
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