Benefits of Cloves: Oral Health, Antioxidants, and More

If you've ever pressed a whole clove against a sore tooth on the advice of a grandparent, you've used one of the oldest home remedies that modern science actually backs up. Cloves have a specific, well-documented power that most kitchen spices can't claim - and it comes down to a single compound that dentists have relied on for over a century.

Cloves are the dried flower buds of Syzygium aromaticum, an evergreen tree native to the Maluku Islands in Indonesia, once known as the Spice Islands. They were valuable enough to fuel wars and finance empires. Today they're easy to find and easy to overlook - a background note in a chai blend or a stud in a holiday ham. But the small, dark, nail-shaped bud carries one of the most concentrated antioxidant loads of any spice on the shelf.

Eugenol: The Compound That Does the Work

Almost everything cloves are known for traces back to eugenol - a natural aromatic compound that makes up a large share of clove's essential oil. Eugenol is what gives cloves their warm, sweet, slightly medicinal smell, and it's the source of most of their biological activity: antioxidant, anti-inflammatory, antimicrobial, and mildly analgesic (pain-relieving) all at once.

That combination is unusual. Plenty of spices are antioxidant-rich, and several are antimicrobial, but eugenol's pain-numbing quality is what set cloves apart historically and put them into dentistry. Alongside eugenol, cloves contain beta-caryophyllene (another anti-inflammatory compound), tannins, flavonoids, and gallic acid, plus a notable amount of the mineral manganese. But eugenol is the star, and it's the reason cloves earned their reputation.

Oral Health: The Best-Evidenced Benefit

This is where cloves have the strongest claim. Eugenol has been used in dentistry for well over a hundred years - it still appears in dental cements, temporary fillings, and gum treatments, valued for its combination of antibacterial action and mild local anaesthetic effect. When eugenol is applied to gums, it both numbs discomfort and kills bacteria, which is a rare and useful pairing.

The traditional remedy of pressing a clove against an aching tooth has real logic behind it: the eugenol provides temporary numbing while acting against the bacteria involved in the pain. Research has found that clove-oil preparations can numb gums comparably to some conventional agents used before dental procedures. Eugenol's activity against oral bacteria also makes it relevant to gum health and fresh breath, which is why clove extract turns up in some natural oral-care products.

One honest caution: this is about culinary cloves and properly formulated products, not undiluted clove oil applied at home. Concentrated clove oil can irritate and even burn gum tissue, so the folk remedy of dabbing neat oil on your gums is one dentists generally advise against. The spice in your tea is a gentle, pleasant thing. The essential oil is potent and needs respect.

Among the Highest Antioxidant Spices Measured

Cloves consistently rank at or near the top when spices are tested for antioxidant capacity - frequently outperforming not just fruits and vegetables but most other spices too. Eugenol, along with gallic acid and various flavonoids, is what drives this. These compounds neutralise free radicals, the unstable molecules that contribute to oxidative stress, cellular ageing, and the slow background processes behind many chronic conditions.

What makes this genuinely useful is that even small culinary amounts contribute meaningfully, because the concentration in cloves is so high. You don't need to eat cloves by the spoonful to benefit from their antioxidant content the way you might with a less dense food. A little goes a long way - which is fortunate, because cloves are strong enough that a little is all most recipes want.

Antimicrobial Activity

Cloves have a long history as a food preservative, and that use rested on something real: eugenol is effective at inhibiting the growth of bacteria. Laboratory studies have shown clove oil acting against a broad range of bacteria, including common foodborne pathogens like E. coli and Salmonella, with some research finding it has a wider antibacterial range than several other plant-derived antimicrobials. Eugenol works by disrupting bacterial cell membranes, which is a difficult mechanism for bacteria to develop resistance against.

For everyday purposes, this doesn't mean a cup of clove-spiced tea is a disinfectant. But it does mean cloves contribute genuine antimicrobial compounds to a blend, and it explains why clove has been part of traditional cold-and-flu and immune-support remedies across many cultures for centuries.

Anti-Inflammatory Effects

Eugenol and beta-caryophyllene both act on inflammatory pathways in the body. Eugenol appears to suppress certain inflammatory mediators, including prostaglandins, which are involved in pain and swelling. Chronic low-grade inflammation is a common thread beneath many age-related conditions, so an anti-inflammatory contribution from the diet - modest but real - is worth having.

This puts cloves in good company with the other warming chai spices. Ginger, cinnamon, and cloves all bring anti-inflammatory activity through different compounds, which is part of why the traditional chai blend works as more than a flavour - the effects overlap and reinforce one another. The post on cinnamon's benefits and the companion piece on ginger cover the other two anchors of that blend.

Emerging Research: Blood Sugar and Liver

Two areas are worth mentioning with appropriate caution, because the research is promising but early.

On blood sugar, some studies suggest clove polyphenols may slow the breakdown of carbohydrates and the absorption of glucose in the gut, which could help moderate post-meal blood sugar spikes. Most of this work is still at the laboratory or animal stage, and human trials are limited. Anyone with diabetes should be especially careful here, because eugenol may interact with blood sugar medications and push levels too low.

On liver health, eugenol's antioxidant and anti-inflammatory properties have shown some protective effects in early studies. Again, this is preliminary, and paradoxically, concentrated clove oil in large amounts can stress the liver rather than protect it - a reminder that the dose makes the difference between benefit and harm.

A Note on Cloves and Safety

Culinary cloves - the amount you'd find in a spiced tea or a recipe - are safe and beneficial for the vast majority of people. The cautions apply to concentrated clove oil and high-dose supplements, which are a different proposition entirely. Concentrated eugenol can cause liver stress, affect blood clotting, and lower blood sugar, and it can interact with blood thinners like warfarin, with diabetes medications, and with NSAIDs.

If you take any of those medications, or you're pregnant or breastfeeding, it's worth a conversation with your healthcare provider before using clove supplements or oil therapeutically. The clove in your chai is not the concern. A bottle of concentrated extract is where care is needed.

Cloves in Chai

Cloves are one of the traditional pillars of masala chai, and their role is distinctive. Where ginger brings heat and cinnamon brings sweetness, cloves add a deep, warm, almost resinous note that gives chai its characteristic backbone. Used with a light hand - which is essential, because cloves are assertive and can dominate a blend if overused - they round out the spice profile and tie the other flavours together.

Old Growth Beverages' Classic Chai microground tea powder includes organic cloves alongside organic ginger, cinnamon, cardamom, and peppercorn over a black tea base. Because it's microground, the whole clove bud is present in the cup rather than steeped and strained away - so the eugenol and the antioxidants come along with the flavour rather than being left behind in a spent tea bag. That whole-spice consumption is the more complete way to get what cloves offer, and it's a good illustration of why the microground format differs from loose leaf or bagged tea.

Cloves also appear in the Rooibos Turmeric Chai, where they join the caffeine-free rooibos base and turmeric - a useful option for anyone who wants the warmth and the spice benefits in the evening or without caffeine. For the fuller picture of how the whole traditional blend came together over thousands of years, the history of chai is worth a read.

How Much, and In What Form

As with the other chai spices, there's an honest calibration to make. The research showing measurable effects on inflammation, blood sugar, or antioxidant status generally uses concentrated clove extracts or oils at doses well beyond what's in a cup of tea. The cloves in a daily chai are a culinary amount, contributing flavour and a modest, steady antioxidant benefit rather than a therapeutic dose.

That's not a knock on the daily cup - it's the point of it. Cloves are potent enough that even culinary amounts carry real antioxidant density, and a regular spiced tea is a sustainable, pleasant way to keep them in your routine. For anything targeting a specific health effect, concentrated forms and medical guidance are the appropriate route, with the safety cautions above firmly in mind.

Frequently Asked Questions About Cloves

What are the main health benefits of cloves?

Cloves are best known for oral health benefits - eugenol, their primary compound, has antibacterial and mild numbing properties long used in dentistry. They're also among the most antioxidant-dense spices measured, offering anti-inflammatory and antimicrobial effects. Emerging research points to possible benefits for blood sugar regulation and liver protection, though those areas need more human study.

Why are cloves good for teeth and gums?

The eugenol in cloves has a rare combination of properties: it acts against oral bacteria while providing a mild local numbing effect. This is why clove oil and eugenol have been used in dentistry for over a century, appearing in dental cements, temporary fillings, and gum treatments. The traditional remedy of pressing a whole clove against a sore tooth works on the same principle. Note that concentrated clove oil applied directly can irritate or burn gum tissue, so this should be approached with care.

Are cloves high in antioxidants?

Exceptionally so. Cloves consistently rank among the highest-antioxidant spices in laboratory testing, often outperforming fruits, vegetables, and most other spices. Their antioxidant power comes from eugenol, gallic acid, and flavonoids, which neutralise free radicals and help protect cells from oxidative stress. Because the concentration is so high, even small culinary amounts contribute meaningfully.

Can you drink cloves in tea every day?

Yes - the culinary amount of cloves in a daily spiced tea is safe and beneficial for most people. The cautions around cloves apply to concentrated clove oil and high-dose supplements, not to the modest amount in a chai blend. If you take blood thinners, diabetes medications, or NSAIDs, or you're pregnant or breastfeeding, check with your healthcare provider before using concentrated clove products - but a daily cup of clove-spiced tea is a gentle, pleasant thing.

What does clove taste like in chai?

Cloves add a deep, warm, slightly resinous note that forms part of the backbone of masala chai. They're assertive and can easily dominate, so they're used sparingly and balanced against sweeter spices like cinnamon and cardamom. In a well-made chai, cloves don't stand out on their own - they tie the other spices together and give the blend its characteristic warmth and depth.

Are cloves safe during pregnancy?

Cloves used in normal culinary amounts, such as in a cup of chai, are generally considered fine during pregnancy. The concern is with concentrated clove oil and high-dose supplements, which can affect blood clotting and interact with medications - those should be avoided during pregnancy unless specifically cleared by a healthcare provider. As with any dietary consideration in pregnancy, it's worth checking with your doctor or midwife if you're unsure.

Which OGB teas contain cloves?

Both the Classic Chai and the Rooibos Turmeric Chai contain organic cloves. The Classic Chai pairs cloves with ginger, cinnamon, cardamom, and peppercorn over a black tea base. The Rooibos Turmeric Chai is caffeine-free and combines cloves with turmeric and the other chai spices on a rooibos base, making it a good evening or caffeine-free option.

A Note on Health Information

The information in this article is intended for general informational purposes only and does not constitute medical advice. Old Growth Beverages is not a medical organisation and our content is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your doctor, midwife, or qualified healthcare provider before making changes to your diet, especially during pregnancy, while breastfeeding, or if you have any existing health conditions or are taking medications.