Clove

About Clove

Syzygium aromaticum is an evergreen tree native to the Maluku Islands (Moluccas) of eastern Indonesia — the same archipelago that produced nutmeg, making the Spice Islands the origin point for two of the most historically consequential spices in human commerce. Like nutmeg, control of the clove trade was a direct cause of European colonial violence: the Dutch East India Company massacred populations and destroyed competing clove trees across the archipelago in the 17th century to maintain a monopoly on what was, weight for weight, among the most valuable substances on earth.

In Ayurvedic pharmacology, Lavanga is among the most well-established and widely used aromatic spices. The Charaka Samhita, Sushruta Samhita, and Ashtanga Hridayam all document clove's use as a deepana (digestive stimulant), vrushya (aphrodisiac), and hridya (cardiotonic). Its place in trikatu-adjacent formulas and in the three-spice combination Trisugandha (clove, cardamom, cinnamon) reflects its integration into core Ayurvedic digestive and respiratory formulas.

The volatile oil of clove (15-18% of the dry bud weight) is dominated by eugenol at 72-90%, making clove the most eugenol-concentrated plant in common therapeutic use. Eugenol is both the source of the characteristic clove aroma and the basis for its most clinically established action: reversible inhibition of cyclooxygensase enzymes (COX-1 and COX-2), giving clove a documented analgesic and anti-inflammatory mechanism. This COX inhibition is the pharmacological basis for clove oil's documented use as a topical dental analgesic.

What are the traditional uses of Clove?

The Charaka Samhita classifies lavanga as one of the substances useful in shwasa (respiratory distress), kasa (cough), hikka (hiccups), and trushna (excessive thirst). It appears in classical Ayurvedic formulas including Sitopaladi Churna (for respiratory conditions), Talisadi Churna (for respiratory-digestive support), and numerous compound formulas for digestive weakness, nausea, and vomiting.

In medieval European medicine, cloves reached the Continent via Arab spice traders and immediately became prized for both culinary and medicinal use. The Hildegard of Bingen's Physica (12th century CE) recommends cloves for headache and gout. Medieval European physicians used clove in preparations for plague (its antimicrobial properties were empirically recognized, though the mechanism was unknown), dental pain, and as a warming digestive tonic.

In traditional Indonesian and Malay medicine in its native Maluku Islands, the whole clove tree has multiple applications: leaves for topical analgesic paste, bark for gastrointestinal complaints, and the buds for the full range of applications that appear in both Ayurvedic and European medicine. In Zanzibar, Tanzania — the world's largest producer of cloves today — the herb is deeply integrated into Swahili traditional medicine for toothache, digestive complaints, and respiratory conditions.

In dentistry, eugenol-based preparations derived from clove oil (zinc oxide eugenol) have been used as dental pulp capping agents and temporary cavity fillings since the late 19th century. This professional dental use is the best-documented transition from traditional empirical observation to modern clinical application in the herb's history.

What does modern research say about Clove?

Clove's most clinically established application is topical dental analgesia. A 1996 comparative study published in the Journal of Dentistry (Alqareer, Alyahya, Andersson) randomized patients with hypersensitive dentinal spots to benzocaine gel, clove gel, or placebo gel. The clove gel showed analgesic equivalence to benzocaine at 20 minutes, significantly superior to placebo. Eugenol's mechanism — reversible inhibition of voltage-gated sodium channels in sensory neurons (local anesthetic mechanism) in addition to COX inhibition — explains this well-documented effect.

For systemic anti-inflammatory activity, eugenol has demonstrated COX-1 and COX-2 inhibition in multiple in vitro and animal studies. A 2006 study in Biological and Pharmaceutical Bulletin (Kim et al.) showed significant inhibition of prostaglandin E2 production by macrophages treated with eugenol, at concentrations achievable in tissues after oral eugenol administration. Whether oral clove doses achieve sufficient eugenol plasma levels for clinically significant anti-inflammatory activity in humans is less established than the in vitro data suggests.

Antimicrobial activity of clove essential oil has been extensively documented against bacterial and fungal pathogens. A 2007 review in Phytotherapy Research (Dorman, Deans) comprehensively documented inhibitory activity against Staphylococcus aureus, E. coli, Helicobacter pylori, Aspergillus species, and Candida albicans. The minimum inhibitory concentrations in several of these studies fall within ranges achievable in the oral cavity from clove oil preparations.

For Helicobacter pylori specifically, a small RCT (Boyanova et al.) tested clove oil against metronidazole-resistant H. pylori and found in vitro activity; clinical H. pylori eradication trials with oral clove preparations have not been conducted at scale.

How does Clove affect the doshas?

Clove's strongly heating, penetrating nature makes it most compatible with vata and kapha constitutions. For vata types, clove's digestive-stimulating, warming, and grounding qualities address the cold, scattered, irregular tendencies of vata digestion. In cooking, clove provides the depth of warmth that vata constitutions benefit from in spiced rice, slow-cooked dishes, and warming beverages.

For kapha types, clove's pungent, drying, heating quality cuts through kapha's cold, heavy, damp accumulation. In respiratory preparations for kapha-type congestion with thick mucus and chest heaviness, clove's expectorant and antimicrobial action is particularly relevant. The traditional Trikatu-adjacent use of clove in respiratory formulas reflects this kapha-clearing action.

Pitta types should use clove moderately. Its high eugenol content and strongly heating virya can significantly aggravate pitta, particularly in the stomach and upper digestive tract. In cooking, small amounts of whole cloves removed before serving are generally tolerable; ground clove in quantity or clove oil preparations are inappropriate for pitta-excess conditions. During summer and inflammatory conditions, reduce clove in cooking.

Which tissues and channels does Clove affect?

What is the recommended dosage for Clove?

Whole cloves in cooking: 2-5 cloves per meal. Ground clove: 0.3-1 gram per day in clinical Ayurvedic references. Clove oil for dental use: 1-2 drops diluted in a carrier oil applied topically, as needed. The German Commission E has not published a formal clove monograph, but European herbal references typically recommend 100-300 mg of dried bud powder or equivalent oil preparation per dose for internal use. Concentrated clove oil is not taken internally without dilution.

What herbs combine well with Clove?

Clove is one of the three spices in Trisugandha (Three Aromas) — clove, cardamom, and cinnamon — a classical Ayurvedic aromatic combination used for digestive weakness, nausea, and as a flavor base for tonic formulas. The combination covers pungent-warming (clove), sweet-aromatic-warming (cardamom), and warming-sweet (cinnamon) dimensions simultaneously.

In Sitopaladi Churna, clove combines with long pepper, cardamom, and rock candy to create one of Ayurveda's most prescribed respiratory formulas. Clove's antimicrobial eugenol content and expectorant action complement long pepper's warming bronchodilating effect and cardamom's aromatic opening of the respiratory channels.

With ginger and black pepper, clove forms the heating component of chai spice — a combination that collectively stimulates agni, reduces gas, prevents post-meal heaviness, and provides mild antimicrobial coverage. The traditional chai blend is pharmacologically coherent: each spice covers different mechanistic ground in digestive support.

When is the best season to use Clove?

Clove is most relevant during Hemanta (early winter) and Shishira (late winter), the seasons of maximum cold and vata-kapha accumulation. Traditional Ayurvedic autumn-winter protocols include clove in warming spice blends, digestive teas, and respiratory preparations. The transition from warm monsoon to cold dry winter is when clove's digestive-strengthening action is most needed.

During Vasanta (spring), clove helps dispel the kapha that accumulated over winter. In summer (Grishma), reduce or eliminate concentrated clove preparations for pitta-sensitive individuals; culinary quantities in savory dishes are generally acceptable. Year-round use in cooking at normal culinary amounts is appropriate.

How do I choose quality Clove?

Whole cloves of high quality are plump, dark brown (not shriveled or grey), and should float horizontally or at an angle in water — cloves that sink directly are old and have lost most of their volatile oil. The fresh snap test: a high-quality clove should snap rather than bend when broken and should release an immediate, intense eugenol aroma. Ground clove deteriorates rapidly; buy whole and grind fresh as needed. Madagascar and Zanzibar cloves are the standard international quality references; Indonesian cloves are also premium. Organic certification is relevant because cloves are produced in significant quantities with pesticide use. For clove oil intended for dental use, source pharmaceutical-grade clove oil that specifies eugenol content (minimum 75%, ideally 80-90%).

Affiliate link — we earn a small commission at no extra cost to you.