15 Potential Health Benefits of Cloves: Science-Backed Insights

15 Potential Health Benefits of Cloves: Science-Backed Insights
Cloves are a culinary spice with a long history of use. In this article, we discuss the potential health benefits of cloves based on available research, including traditional uses as a medicinal herb, among other insights on cloves, as well as potential side effects of cloves.

 


What are Cloves?

 

Closeup, clove bud spice in farmer hands

 

Many people are familiar with cloves as a culinary spice, but fewer are aware of the research exploring their potential supportive properties. Cloves are actually the dried flower buds of the clove tree (Syzygium aromaticum), an evergreen tree native to the Maluku Islands of Indonesia. The compounds found in cloves—primarily eugenol, along with other antioxidants—have been studied in recent years (including 2023–2025 research) for potential benefits like supporting liver function, antimicrobial effects, blood sugar stability, and bone health, though most evidence comes from lab, animal, or preliminary studies.

  

 

What Are Cloves Used for?

 

Spice cloves on marble table. Syzygium aromaticum

 

Cloves offer numerous traditional and culinary uses. Most commonly, cloves are used as a culinary spice; however, various parts of the clove tree—including the dried flower buds, leaves, stems, and oil—have been used in traditional practices to make remedies. Cloves are commonly applied (diluted) directly to the gums for temporary toothache relief or pain control during dental work, thanks to eugenol's numbing properties, and in other dental-related applications. Traditionally, cloves have also been used in herbal protocols for digestive support, including concerns related to parasitic worm infections. High-quality clove extracts are included in formulas like our Para-Clear for those interested in concentrated forms, always alongside professional guidance.

 


 

What are the Health Benefits of Cloves?

 

Cloves have been used both in cooking and traditionally as a medicinal herb for thousands of years. Ongoing research, including recent studies from 2023–2025, explores their potential supportive properties primarily due to compounds like eugenol and other antioxidants. Some of the researched areas for whole cloves and clove extracts include:

 

1. Cloves are Used for Pain Relief

 

One of the most traditional and well-researched uses of cloves is for temporary pain relief, particularly in oral care. The primary active compound, eugenol, acts as a natural anesthetic and is even used in some dental products and over-the-counter topical analgesics.Applying a small amount of properly diluted clove oil to the gums may provide temporary relief from toothache while awaiting professional dental care. However, undiluted clove oil can irritate or damage gum tissue, so always dilute it (e.g., with a carrier oil like coconut or olive oil) and consult a dentist before use—especially if you have allergies, are pregnant, or on medications.

 

2. Traditional Use of Cloves for Digestive Support and Parasite Concerns

 

Parasitic infections remain a global health concern, particularly in regions with limited access to clean water and sanitation. While many people with parasites may not show obvious symptoms, common intestinal parasites can affect nutrient absorption and overall digestive comfort.

 

Cloves have a long history in traditional herbal practices for supporting digestive health. 


Compounds in cloves, primarily eugenol, have shown anthelmintic (anti-parasitic) properties in laboratory and some animal studies—demonstrating potential activity against certain parasites like roundworms and protozoa. However, most evidence is preliminary (in vitro or animal-based), and human clinical trials are limited.


A parasite is an organism that lives in or on a host and derives nutrients at the host's expense. In humans, some parasites may compete for vitamins, proteins, and other nutrients, potentially contributing to digestive discomfort. They are most commonly associated with the intestines but can affect other areas in rare cases.

 

The nematode Steinernema feltiae under the microscop


Traditionally, various herbs—including cloves, black walnut hulls, and wormwood—have been combined to support the body's natural digestive environment and response to intestinal concerns. These herbs are valued in herbal protocols for their bitter and aromatic properties.

 

At Zuma Nutrition, we incorporate high-quality clove extract alongside black walnut hull and wormwood in our Parasite Detox Tonic as a concentrated traditional formula. This blend draws from historical "wormwood complex" practices and is intended to support digestive wellness when used as part of a balanced approach.


Important Disclaimer: Herbal supplements are not proven to diagnose, treat, cure, or prevent parasitic infections. If you suspect a parasite (e.g., from travel, persistent bloating, or lab confirmation), consult a healthcare professional for proper testing and evidence-based treatment. Self-treating without guidance can delay care or cause side effects.

 

For general digestive support, many people incorporate foods traditionally viewed as supportive, such as pumpkin seeds, papaya seeds, garlic, and cloves, into meals, stay hydrated, and focus on whole foods. Periodic wellness routines, a nutrient-dense diet, good hygiene, and avoiding common contamination sources (e.g., undercooked meat, contaminated water) are key to maintaining gut health.

 

Are Cloves Antiparasitic?

 

Yes, cloves are considered antiparasitic in traditional herbal practices. Lab studies show eugenol (cloves' main compound) has demonstrated antiparasitic effects against certain parasites in vitro and in animal models, but human evidence is limited and preliminary.

 

Do Cloves Kill Parasites in the Body?

 

Some in vitro and animal research suggests clove compounds may disrupt parasite viability or egg hatching, leading to traditional use for "expelling" worms. However, there are no robust human studies confirming that cloves directly kill parasites in the body. Always seek professional testing and treatment for suspected infections.

 

Cloves for Parasites: Safe Incorporation Ideas


For those exploring cloves as part of general digestive support:

  • Add 1–2 whole cloves to teas or cooking daily (culinary amounts are generally recognized as safe).

  • Use small amounts of ground cloves in meals (e.g., ¼–½ teaspoon).


Strong Reminder: There is no established therapeutic "cloves for parasites dosage" in humans. Avoid high concentrated doses without professional guidance—eugenol can cause irritation or other side effects if overused. Always consult a healthcare provider before using cloves or any herb intensively.


 

3. Potential Antifungal Properties of Cloves

 

Clove tree with blooming flowers and fresh green leaves

 

Clove oil, particularly its main compound eugenol, has demonstrated antifungal activity in laboratory studies. Research, including studies published in the National Library of Medicine, shows that both clove essential oil and its volatile vapor can inhibit spore germination and mycelial growth of certain fungi, such as Candida albicans and various dermatophytes (e.g., Trichophyton and Epidermophyton species).


In these studies, direct application of clove oil showed fungicidal effects (killing fungi), while the vapor exhibited fungistatic activity (preventing growth). However, most evidence comes from in vitro (test-tube) research, and human clinical studies are limited.

 

At Zuma Nutrition, we include high-quality clove extract in our Candida Cleanse tonic as part of a traditional herbal approach to supporting microbial balance.


Note: Cloves are not a proven treatment for fungal infections. For persistent or confirmed infections (e.g., Candida overgrowth), consult a healthcare professional for proper diagnosis and evidence-based care.

 

4. Cloves and Immune Support


Cloves are rich in antioxidants, including eugenol, which may help protect cells from oxidative stress. They also provide small amounts of vitamin C (which supports immune function), vitamin K, manganese, and other micronutrients that contribute to overall health.


While these compounds play a role in general wellness, cloves should be viewed as a supportive dietary spice rather than a primary immune booster. A balanced diet, adequate sleep, and healthy lifestyle habits remain the foundation of strong immunity.

 

5. Cloves are Used as an Anti-Bacterial

 

Cloves, particularly clove oil and eugenol, have demonstrated antibacterial activity in laboratory studies. Research shows they can inhibit the growth of various bacteria, including some strains associated with food spoilage and oral health issues.
These properties contribute to cloves' traditional use in supporting oral hygiene (e.g., as a component in some natural mouth rinses or dental products). However, most evidence comes from in vitro studies, and more human research is needed to confirm clinical benefits.Cloves should not replace prescribed antibiotics or professional dental care.

 

6. Cloves May Improve Liver Health

 

Preliminary research, primarily from animal studies, suggests that compounds in cloves—especially eugenol—may help support liver health.
Clove essential oil still life. Amber glass bottle with pipette
In one study on rats with fatty liver disease, mixtures containing clove oil or eugenol reduced oxidative stress, lowered inflammation, and improved overall liver function. Another animal study found that eugenol helped reverse signs of liver cirrhosis (scarring).While promising, these results are from animal models, and human studies are limited. Cloves are not a proven treatment for liver conditions.
Anyone with liver concerns should consult a healthcare professional for proper evaluation and evidence-based guidance. High doses of eugenol can potentially stress the liver, so moderation is key.

 

7. Cloves and Blood Sugar Support

 

Diabetes is a condition where blood glucose (blood sugar) levels are consistently too high, often because the body doesn't produce enough insulin or doesn't use it effectively. Over time, elevated blood sugar can lead to serious health complications.
Some preliminary research suggests that compounds in cloves, particularly eugenol and other polyphenols, may support healthy blood sugar regulation.
  • An animal study in type 2 diabetic mice found that clove extract helped suppress spikes in blood glucose levels.
  • Other lab and animal research observed that clove extract appeared to enhance glucose uptake into cells, increase insulin secretion, and improve the function of insulin-producing cells.

 

However, these findings come primarily from test-tube and animal studies. Robust human clinical trials are still limited, and cloves are not a proven treatment or substitute for diabetes management.
If you have diabetes or prediabetes, work closely with your healthcare provider. Lifestyle, diet, and prescribed medications remain the cornerstone of blood sugar control. Do not adjust medications or rely on herbs like cloves without professional guidance.

 

8. Cloves and Oral Health Support

 

Teeth Whitening. Woman Creating Heart Shape With Hands

 

Cloves have a long-standing reputation in traditional remedies for promoting oral comfort and hygiene, largely due to eugenol's natural numbing and antimicrobial properties.

 

  • Clove oil is commonly used in dental care products (e.g., temporary fillings, mouth rinses) for its ability to provide short-term relief from toothache and gum discomfort.
  • Laboratory studies show clove extracts can inhibit the growth of certain oral bacteria and fungi, supporting overall mouth health when used appropriately.

 

Many people incorporate diluted clove oil or clove-infused rinses as part of a natural oral care routine. For example:

 

  • Add 1 drop of food-grade clove essential oil to a glass of warm water for a soothing rinse (spit out after use).
  • Chew a single whole clove gently for temporary fresh breath and comfort.

 

9. Cloves are High in Antioxidants

 

Cloves are among the richest spices in antioxidants, compounds that help protect cells from damage caused by free radicals and oxidative stress. Oxidative stress is linked to inflammation and the development of many chronic conditions.
The primary antioxidant in cloves is eugenol, which has been shown in laboratory and animal studies to neutralize free radicals effectively. Cloves also contain other beneficial polyphenols and flavonoids.
Adding small amounts of cloves to your diet—whether in cooking, teas, or as a spice—can contribute to overall antioxidant intake as part of a balanced, nutrient-rich eating pattern.

 

10. Cloves May Protect Bone Health

 

Knee pain, fitness and hands of person man in park with injury,

 

Cloves are a natural source of manganese, an essential mineral that plays an important role in bone formation and maintenance.
Some preliminary research, mainly from animal studies, suggests that clove extract (particularly eugenol and other compounds) may help support bone density and strength. In one study on animals with osteoporosis-like conditions, clove extract was associated with improved bone markers, increased mineral content, and greater tensile strength.

 

 

11. Cloves May Boost Gastrointestinal Health

 

Beyond their traditional antimicrobial uses, cloves have long been valued in herbal practices for promoting overall digestive comfort.
Historical references, such as in herbal literature, note that cloves have been used to support healthy digestion, ease gastrointestinal discomfort, and occasionally help settle nausea or vomiting due to their warming and mild anesthetic properties (from eugenol).Some traditional applications include:

 

  • Chewing or infusing a single clove to soothe mild digestive upset.
  • Adding cloves to meals for their carminative (gas-relieving) effects.

 

What are the Active Compounds in Cloves?

 

Cloves - spice and medicine. Natural medicine and aromatherapy

 

You might be wondering what gives cloves their distinctive aroma and all those potential health-supporting properties. It mostly comes down to a powerful lineup of natural plant compounds.
The star player is eugenol—it can make up as much as 70–90% of clove essential oil and is largely responsible for cloves’ warm, numbing sensation and many of the researched effects.
Other key compounds include:
  • Acetyl eugenol and beta-caryophyllene (which contribute anti-inflammatory and antioxidant activity in lab studies)
  • Vanillin (yes, the same compound that gives vanilla its flavor)
  • Flavonoids like kaempferol, rhamnetin, and eugenin
  • Triterpenoids such as oleanolic acid and sterols like stigmasterol and campesterol
Cloves also contain smaller amounts of tannins, methyl salicylate (wintergreen-like scent), crategolic acid, and various sesquiterpenes.
Basically, it’s this unique mix of bioactive compounds—especially the high eugenol content—that researchers focus on when studying cloves’ antioxidant, antimicrobial, and other potential properties.

 

Are Cloves Safe? 

 

Cloves have been used safely for centuries as a culinary spice in small, food-like amounts. Most people can enjoy them without issues, but like any potent herb or spice, there are some important safety considerations—especially when using concentrated forms (oil, tinctures, capsules) or larger amounts.

General Safety Guidelines

 

  • Culinary use (whole or ground cloves in cooking, teas, or baking) is generally recognized as safe (GRAS) for most healthy adults.
  • Allergies: Rarely, some people may be allergic to cloves. Stop use and seek medical help if you experience hives, swelling, difficulty breathing, or other signs of an allergic reaction.

 

Special Precautions

 

  • Pregnancy and breastfeeding: Stick to normal food amounts. There's not enough reliable research on higher or medicinal doses, so it's best to avoid concentrated clove products during these times.
  • Children: Clove essential oil should not be given internally to children—it can be toxic even in small amounts.
  • Blood clotting concerns: Eugenol in cloves may slow blood clotting. Avoid high doses (especially clove oil) if you have a bleeding disorder, are taking blood-thinning medications (e.g., warfarin, aspirin), or are scheduled for surgery (stop concentrated use at least 2 weeks prior).
  • Diabetes: Cloves may influence blood sugar levels. If you have diabetes, monitor your blood sugar closely when adding significant amounts of cloves to your routine.
  • Medication interactions: Eugenol and other compounds could potentially interact with certain medications. Always check with a healthcare provider before using clove supplements therapeutically.

 

Clove Side Effects

 

Common side effects from excessive or concentrated clove use may include:

 

  • Mouth or throat irritation
  • Upset stomach, heartburn, or nausea
  • In rare cases with very high doses of clove oil: dizziness, liver stress, or more serious effects


Summary

 

Cloves are a flavorful, antioxidant-rich spice with a long history of traditional use and some promising preliminary research behind their potential supportive properties—from oral comfort and digestive wellness to antioxidant and antimicrobial effects.When enjoyed in moderation (especially as a culinary spice or tea), cloves can be a wonderful addition to a healthy lifestyle.
If you're interested in a more concentrated traditional herbal approach, our Parasite Detox Tonic includes high-quality clove extract alongside black walnut hull and wormwood—designed to support digestive wellness as part of a balanced routine. As always, consult your healthcare provider before starting any new supplement.

 

 

 

References

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5022377/

https://pubmed.ncbi.nlm.nih.gov/31101552/

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3769004/

https://pubmed.ncbi.nlm.nih.gov/24611461/

https://pubmed.ncbi.nlm.nih.gov/21987283/

https://pubmed.ncbi.nlm.nih.gov/21711176/

 

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