Calendula

Botanical Name:
 Calendula officinalis
Common Names:
 Garden marigold, Poet's marigold, Pot marigold

Overview

The petals of the calendula plant (Calendula officinalis) have been used for medicinal purposes for centuries. Often referred to as pot marigold or garden marigold, calendula is native to Mediterranean countries but is now grown as an ornamental plant throughout the world. It is important to note, however, that not all household plants called marigold are members of the calendula family.
Folk medicine healers in Europe used infusions, extracts, and ointments prepared with calendula petals to induce menstruation, produce sweat during fevers, and cure jaundice. Calendula preparations were also used in the United States during the 19th century to treat stomach ulcers, liver complaints, conjunctivitis (pink eye), and wounds. Researchers soon discovered that compounds in calendula petals help reduce inflammation and control bleeding. Today, the dried petals of the calendula plant are used in tinctures, ointments, and washes to speed the healing of burns, bruises, and cuts, as well as the minor infections they cause.

Plant Description

Calendula is an annual plant that thrives in virtually any soil but can typically be found in Europe, Western Asia, and the United States. Its branching stems grow to a height of 30 to 60 cm. Calendula has a flowerhead situated on a well-defined green floral receptacle. The inner portion of the flowerhead consists of orange-yellow, tubular florets (often called petals).

Parts Used

The dried petals of the calendula plant are used for medicinal purposes.

Medicinal Uses and Indications

Burns, Cuts and Bruises
Calendula tinctures, ointments, and washes are commonly used to speed the healing of burns, bruises, and cuts, as well as the minor infections they cause.
Professional homeopaths often recommend ointments containing homeopathic doses of calendula to heal first-degree burns and sunburns. In fact, some homeopaths consider this remedy the treatment of choice for children. Homeopathic calendula ointments may also be used in the healing stages of second- and third-degree burns to stimulate regrowth of skin and to diminish scar formation.
Ear Infection
Homeopathic doses of calendula also appear to reduce pain caused by ear infections in children. In a study conducted in Israel, 103 children with ear infections were given herbal ear drops or drops containing pain-relieving medications. The herbal ear drops contained a variety of herbal extracts including calendula, St. John's wort, mullein flower, and garlic. The researchers found that the combination of herbs in the ear drops were as effective as the medication ear drops in reducing the children's ear pain.
HIV
Preliminary laboratory studies also suggest that extracts of dried calendula petals inhibit the activity of the human immunodeficiency virus (HIV) in test tubes. Calendula has not been studied in people with HIV, however, so it is not clear whether this herb is safe or effective for people with this condition.

Available Forms

Fresh or dried calendula petals are available in tinctures, liquid extracts, infusions, ointments, and creams.
Calendula products should always be protected from light and moisture, and should not be used after three years of storage.

How to Take It

Pediatric
Use only topical and homeopathic preparations for children.
Calendula can be used externally in the form of creams and ointments in dosages of 2 to 5 g calendula per 100 g cream or ointment.
For homeopathic dosages follow instructions on product labeling or consult a licensed homeopath.
Adult
Recommended adult doses are as follows:
Infusion: 1 tsp dried florets in 8 oz water; steep 30 to 40 minutes; drink two to three cups per day
Fluid extract (1:1 in 40% alcohol): 0.5 to 1.0 mL three times per day
Tincture (1:5 in 90% alcohol): 2 to 4 mL three times per day
Ointment: 2 to 5 g crude drug in 100 g ointment

Precautions

The use of herbs is a time-honored approach to strengthening the body and treating disease. Herbs, however, contain active substances that can trigger side effects and that can interact with other herbs, supplements, or medications. For these reasons, herbs should be taken with care, under the supervision of a practitioner knowledgeable in the field of botanical medicine.
Frequent skin contact may result in an allergic reaction to the herb.
Calendula is also known to affect the menstrual cycle and should not be used during pregnancy and breastfeeding.

Possible Interactions

There are no known scientific reports of interactions between calendula and conventional medications.