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Marigold (Calendula) – Benefits and Uses

The marigold (Calendula officinalis) is a medicinal plant with anti-inflammatory and wound-healing properties that has been used in natural medicine for centuries.

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Things worth knowing about "Marigold"

The marigold (Calendula officinalis) is a medicinal plant with anti-inflammatory and wound-healing properties that has been used in natural medicine for centuries.

What is the Marigold?

The marigold (Calendula officinalis), also commonly known as the pot marigold, is one of the best-known medicinal plants in the Western herbal tradition. It belongs to the daisy family (Asteraceae) and is native to the Mediterranean region. Its vibrant orange and yellow flowers have been used since the Middle Ages to treat skin complaints, wounds, and inflammation. Today, marigold is a recognized component of phytotherapy and is found in numerous medicinal preparations, ointments, creams, and cosmetic products.

Active Compounds and Mechanism of Action

The healing properties of marigold are attributed to its diverse range of bioactive constituents:

Flavonoids (e.g., isorhamnetin, quercetin): provide antioxidant and anti-inflammatory effects
Triterpenoids (e.g., oleanolic acid, ursolic acid): promote wound healing and exhibit antimicrobial properties
Carotenoids (e.g., lutein, beta-carotene): protect cells from oxidative stress and support skin regeneration
Essential oils: contribute antimicrobial and anti-inflammatory effects
Polysaccharides: support immune function and tissue repair
Saponins: contribute to the anti-inflammatory activity

Together, these compounds inhibit pro-inflammatory signaling pathways (including COX and LOX enzymes) and stimulate fibroblast proliferation, which accelerates wound healing.

Traditional Use

Marigold has been used as a medicinal plant since at least the 12th century and has a long history in European folk medicine. Traditional applications included:

Minor wounds, abrasions, and burns
Skin irritations and eczema
Insect bites and stings
Inflammation of the oral mucosa
Muscle pain and bruising

Medical Applications

Topical Use

The best-evidenced application of marigold is the topical treatment of skin conditions. Preparations such as Calendula ointment, cream, or tincture are used for:

Poorly healing wounds and ulcers
Dermatitis and skin irritations
Radiation dermatitis (skin damage from radiotherapy)
Diaper rash in infants
Dry and irritated skin

Internal Use

As a tea or tincture, marigold is taken internally to relieve gastrointestinal complaints such as gastritis, cramps, and mucosal inflammation. It is also traditionally used to ease menstrual discomfort.

Recommended Dosage and Forms

Marigold is available in various forms:

Ointment/Cream: preparations containing 2-5% Calendula extract, applied to affected skin areas several times daily
Tincture: diluted for compresses or rinses (typically 1:3 to 1:5 with water)
Tea: 1-2 teaspoons of dried flower petals per cup of hot water, 2-3 times daily
Oil: Calendula macerated oil for sensitive skin care and massage

Official dosage recommendations from the European Pharmacopoeia and ESCOP (European Scientific Cooperative on Phytotherapy) suggest 1-4 g of dried flowers per cup for infusions.

Safety and Side Effects

Marigold is generally considered well tolerated. Possible adverse effects include:

Allergic reactions: People with allergies to plants in the daisy family (e.g., chamomile, arnica, chrysanthemums) may experience cross-reactions to Calendula
Contact dermatitis: Rarely reported with topical use
Pregnancy: Internal use should be avoided during pregnancy, as uterine-stimulating properties have been discussed

Caution is advised for individuals with known allergies to the Asteraceae family. Medical advice should be sought before use in young children or when taking other medications.

Scientific Evidence

Clinical studies particularly support the effectiveness of Calendula preparations in treating radiation-induced dermatitis and in promoting wound healing after surgical procedures. A randomized trial demonstrated that Calendula ointment was superior to trolamine in reducing acute dermatitis in breast cancer patients undergoing radiotherapy. Further studies confirm antimicrobial and antifungal properties of Calendula extracts.

References

European Medicines Agency (EMA): Assessment report on Calendula officinalis L., flos. EMA/HMPC/179281/2009, London, 2008.
Pommier P. et al. - Phase III randomized trial of Calendula officinalis compared with trolamine for the prevention of acute dermatitis during irradiation for breast cancer. Journal of Clinical Oncology, 22(8), 2004.
Muley B.P., Khadabadi S.S., Banarase N.B. - Phytochemical constituents and pharmacological activities of Calendula officinalis Linn. Tropical Journal of Pharmaceutical Research, 8(5), 2009.

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