Clove water is one of the simplest herbal preparations you can make at home: steep a few whole cloves in hot water, strain, and drink. The main active compound you are extracting is eugenol, which gives cloves their sharp, warm flavor and drives most of the biological activity researchers have studied. But “simple to make” does not mean “impossible to get wrong,” and the gap between a mild daily tonic and a dose that could stress your liver is smaller than many wellness sites suggest.
How to Prepare Clove Water
There is no single standardized recipe because clove water is a folk preparation, not a pharmaceutical product. That said, most traditional and contemporary approaches converge on a narrow range. Take three to five whole cloves, lightly crush them with the flat side of a knife or a mortar and pestle to expose more surface area, and place them in a cup. Pour about 250 ml of freshly boiled water over the cloves and let them steep for ten to fifteen minutes. Strain out the solids and let the liquid cool to a comfortable drinking temperature.
Some people prefer to soak whole cloves overnight in room-temperature water. This cold-infusion method produces a milder, less pungent drink because heat extracts more eugenol and other volatile compounds. If you want a stronger infusion, you can simmer two or three cloves in a small pot of water for five to ten minutes, though boiling for longer can make the taste aggressively bitter. Either way, drinking clove water first thing in the morning on an empty stomach is the most common traditional approach, largely because absorption tends to be faster without food competing for attention in your gut.
Flavor is worth thinking about. Research on herbal tea formulations has found that adding more clove to a blend consistently lowers how much people enjoy the drink, especially in terms of taste and bitterness scores.1Amerta Nutrition. The Effect of Herbal Tea Formulation Made of Mangosteen Pericarp (Garcinia mangostana), Cinnamon (Cinnamon verum), and Clove (Syzygium aromaticum) on Panelist Acceptance Level If you find plain clove water too intense, try cutting the number of cloves in half, adding a teaspoon of honey, or blending the infusion with a small piece of fresh ginger or a cinnamon stick. These pairings are common in South and Southeast Asian traditional medicine, where clove has been used as a food preservative and remedy for centuries.2PubMed Central. Clove (Syzygium aromaticum): a precious spice
What You Are Actually Drinking
When you steep cloves in water, you are pulling out a mixture of phenolic compounds. The dominant one is eugenol, which in clove extracts has been measured at concentrations around 5.66 mg/ml, far higher than other phenolics in the same sample like gallic acid, caffeic acid, and ferulic acid.3Journal of the College of Basic Education. Identification of phenolic compounds in Syzygium aromaticum (clove) using HPLC technique and evaluation of their antioxidant activity Eugenol is what gives cloves that characteristic numbing, slightly medicinal bite, and it accounts for most of the antioxidant and anti-inflammatory activity attributed to the spice.4PubMed. Effects of lipid formulations on clove extract spray dried powders: comparison of physicochemical properties, storage stability and in vitro intestinal permeation
A plain water infusion will not extract eugenol as efficiently as an alcohol-based tincture or an oil distillation, because eugenol is only partially water-soluble. So the concentration you get in your cup is considerably lower than what you would find in clove essential oil. This is actually a safety advantage for casual daily use: it is much harder to accidentally overdose on a water infusion than on drops of concentrated essential oil.
How Your Body Handles Eugenol
Once you swallow clove water, eugenol is absorbed quickly through the gut. A metabolism study in humans found that eugenol was rapidly absorbed after oral administration and almost completely excreted in urine within 24 hours, with less than 0.1% leaving the body as unmetabolized eugenol.5PubMed. The metabolism of eugenol in man Your liver does the heavy lifting, converting eugenol into water-soluble metabolites that your kidneys can flush out. This rapid clearance means eugenol does not accumulate in your body from one cup to the next, at least at moderate doses. But it also means your liver is doing real metabolic work every time you drink it, which becomes relevant when we talk about safety limits.
Potential Benefits of Clove Water
Oral Health
If there is one area where cloves have the longest track record, it is the mouth. Dentists have used eugenol-based preparations for over a century, and the antimicrobial properties hold up under lab testing. Clove extract has demonstrated activity against common oral pathogens, including the bacteria primarily responsible for cavities and the yeast that causes oral thrush.6PubMed Central. Antimicrobial synergy of Salvadora persica, clove, and propolis against oral pathogens: Relevance to dental applications Swishing clove water around your mouth before swallowing gives these compounds direct contact with your gums and teeth. Whether a diluted water infusion delivers enough eugenol to meaningfully suppress bacterial colonies in a living mouth, rather than in a petri dish, is less clear. Lab results do not always translate to real-world oral hygiene, but using clove water as a supplemental rinse is unlikely to cause harm and may offer modest antiseptic benefit.
Anti-Inflammatory and Antioxidant Effects
Eugenol and the flavonoids in clove have been shown to reduce markers of inflammation and oxidative stress in multiple animal and cell studies. A comprehensive review noted that these compounds help decrease inflammation and alleviate pain.7PubMed Central. Bioactive properties of clove (Syzygium aromaticum) essential oil nanoemulsion: A comprehensive review In rats exposed to a toxic heavy metal, clove oil raised levels of key protective enzymes in the liver by large margins and reduced markers of organ damage.8PubMed Central. Therapeutic Potential of Clove Oil in Mitigating Cadmium-Induced Hepatorenal Toxicity Through Antioxidant, Anti-Inflammatory, and Antiapoptotic Mechanisms These findings are encouraging for understanding how clove compounds work at the cellular level, though animal protection against cadmium poisoning is a far cry from proving that your morning cup of clove water will reduce joint pain or protect your liver from everyday stressors.
Blood Sugar Effects
This is where the human evidence is the most interesting, even if still preliminary. A pilot study using a water-soluble clove extract found that it enhanced glucose uptake in muscle cells and inhibited the enzymes that break down starches into sugar, which could slow the spike in blood sugar after a meal.9PubMed Central. Water-soluble polyphenol-rich clove extract lowers pre- and post-prandial blood glucose levels in healthy and prediabetic volunteers: an open label pilot study Separately, animal research has shown that clove extract and one of its lesser-known compounds improved insulin signaling in muscle cells and enhanced glucose tolerance in diabetic mice.10PubMed. Clove and Its Active Compound Attenuate Free Fatty Acid-Mediated Insulin Resistance in Skeletal Muscle Cells and in Mice A study using an aqueous clove extract in diabetic rats also found noticeably lower blood sugar levels compared to untreated animals.11Natural and Engineering Sciences. The potential Effect of Aqueous Extract of Cloves on Some Physiological and Immunological Parameters in induced diabetic Rats
The blood sugar angle is plausible, but keep perspective. These are small-scale studies, some in cells and animals, with only limited human data from an open-label pilot without a placebo group. Clove water is not a substitute for diabetes medication or a disciplined diet. If you are managing blood sugar, it might be a harmless addition to your routine, but it should not replace anything your doctor has prescribed.
How Much Is Too Much
Here is where many online guides get vague, and vagueness is dangerous with a compound as biologically active as eugenol. A safety study on a standardized polyphenolic clove extract tested rats on daily doses up to 1,000 mg per kilogram of body weight for 90 days and found no toxicologically significant changes, establishing that as the highest safe dose in the study.12PubMed Central. Safety assessment of a standardized polyphenolic extract of clove buds: Subchronic toxicity and mutagenicity studies Rat doses do not translate directly to human doses, but the finding suggests that moderate daily consumption of clove as a food or mild infusion sits well within the safety margin.
The trouble starts with concentrated forms. A separate study in rats found that eugenol at 10 mg per kilogram of body weight was safe for long-term use, but doses of 20 mg per kilogram and above caused structural and functional damage to liver tissue.13PubMed. High doses of eugenol cause structural and functional damage to the rat liver The gap between “safe” and “liver-damaging” was just a doubling of the dose. This matters because people who add clove essential oil to their water, rather than steeping whole cloves, can easily cross that threshold. A single drop of clove essential oil contains far more eugenol than a cup of clove water made from three to five whole buds. If you stick to whole cloves steeped in water, the concentration is naturally self-limiting. If you are using essential oil, you are playing a different game with much tighter margins.
A practical guideline for daily clove water: one cup made from three to five whole cloves is a reasonable and traditional amount. Two cups a day is likely fine for most adults. Drinking it all day long, or dramatically increasing the number of cloves, pushes you into territory where the research on safety gets thinner and the risk to your liver gets more real.
Allergic Reactions and Sensitivity
Eugenol is both a primary irritant and a sensitizer, meaning it can cause reactions in people who have never had trouble with it before. Documented reactions include contact hives, chronic hives, and allergic contact dermatitis, possibly because eugenol can react directly with proteins in the body to form compounds that trigger immune responses.14PubMed Central. An unexpected positive hypersensitive reaction to eugenol Most people associate clove allergies with topical use in dentistry, but drinking a concentrated infusion exposes your mouth, throat, and gut lining to the same compound. If you develop a burning sensation in your mouth beyond the normal mild numbing, swelling of the lips or tongue, or a rash around your mouth after drinking clove water, stop and talk to a doctor. Starting with a weak infusion the first time is a sensible way to test your tolerance.
Who Should Be Cautious
The blood-sugar-lowering effect of clove water, mild as it may be, becomes a concern if you are already taking medication for diabetes. Adding a daily clove infusion on top of metformin or insulin could, in theory, push your blood sugar lower than intended. There are no controlled human trials measuring this specific interaction, but the animal and cell evidence for clove’s glucose-lowering action is consistent enough to warrant caution. If you are on blood sugar medication, mention clove water to your doctor before making it a habit.
Eugenol also has mild blood-thinning properties. People taking anticoagulants like warfarin should be aware that large or frequent doses of clove water could amplify the drug’s effect, raising the risk of bleeding. Again, a single daily cup is unlikely to cause problems, but the risk scales with quantity.
Pregnancy presents its own uncertainty. A review of herbal use during pregnancy noted that cloves in normal food amounts tend to be safe, but there is insufficient information about the possible adverse effects of consuming cloves in large amounts during pregnancy.15PubMed Central. Exploring the Use of Herbal Treatments During Pregnancy Among Saudi Women: An application of the knowledge-attitude-practice model “Insufficient information” is not the same as “known to be dangerous,” but it does mean that concentrated daily clove water falls into a gray zone where the evidence cannot reassure you. Using a pinch of clove in cooking is a different proposition from drinking a daily infusion. Pregnant and breastfeeding women would be wise to stick with culinary amounts and skip the concentrated drink.
Children and Clove Water
Most of the safety research on clove compounds has been conducted in adults or adult-weight animals. Children have smaller body mass and less mature liver enzyme systems, which means the same number of cloves steeped in a cup could represent a proportionally larger dose. There is no established safe threshold for clove water in children. If you want to give a child a taste, dilute a standard adult infusion significantly, but there is no compelling evidence-based reason to make clove water a regular part of a child’s diet.
Storage, Freshness, and Quality
Clove water does not keep well. Unlike dried whole cloves, which retain their potency for months in an airtight container, a water infusion starts degrading within hours at room temperature. Bacterial growth is a real concern in any warm, nutrient-containing liquid. Make your clove water fresh each day. If you want to prepare a batch, refrigerate it and use it within 24 hours. Clove’s antimicrobial properties do slow spoilage in some food contexts, as research on clove-enhanced kimchi paste has shown, where clove powder inhibited bacterial growth and extended shelf life.16PubMed Central. Effect of clove powder on quality characteristics and shelf life of kimchi paste But a dilute water infusion is a very different environment from a salty, acidic paste, so do not assume your clove water is self-preserving.
The quality of the cloves themselves matters too. Whole, plump cloves with a slightly oily surface and a strong aroma are what you want. If they feel dry, light, and have almost no smell when crushed, much of the eugenol has already evaporated, and your infusion will be weak. Buy whole cloves rather than pre-ground, because ground clove loses volatile compounds much faster after the cells are broken open.
Contamination Risks You Might Not Expect
One concern that rarely comes up in wellness discussions about clove water is heavy metal contamination in the spice itself. A study analyzing cloves from Zanzibar, one of the world’s major clove-producing regions, found levels of chromium, cadmium, and lead that exceeded the safety limits set by the FAO and WHO.17Open Access Library Journal. Heavy Metals Content in Cloves Spices (Syzygium aromaticum) Cultivated in Zanzibar Cadmium levels were particularly elevated. When you steep cloves in hot water, you are extracting not just beneficial phenolics but also whatever contaminants are present in the plant material.
This does not mean all cloves are contaminated. Heavy metal levels depend on the soil, water, and agricultural practices where the cloves were grown. But it does mean that sourcing matters, especially if you are drinking clove water daily. Buying organic, third-party-tested cloves from a reputable spice supplier reduces your risk. If you are consuming clove water every morning for months, the cumulative exposure to trace metals in a low-quality product could become meaningful. This is not a reason to panic, but it is a reason to treat your clove supply the way you would treat any supplement: pay attention to where it comes from.
Clove Essential Oil in Water
A recurring question is whether you can just add a drop of clove essential oil to water instead of steeping whole buds. You can, but you probably should not unless you know exactly what you are doing. Clove essential oil is roughly 80 to 90 percent eugenol by weight, making it dramatically more concentrated than a water infusion. As the liver toxicity research described earlier showed, the margin between a safe and a harmful dose of eugenol is not wide. A single drop of food-grade clove essential oil in a full glass of water is likely within the safe range for most adults, but two or three drops might not be, and essential oil does not dissolve evenly in water, meaning you could get an uneven dose in each sip.
If you choose to go this route, use only essential oil explicitly labeled as food grade, never add more than one drop per glass, and consider mixing the oil into a small amount of honey or a carrier fat first to help it disperse more evenly. Better yet, just use whole cloves. The steeping process naturally extracts a reasonable dose, and you do not need to worry about counting drops or uneven dispersion. The traditional method exists for a reason: it works and it is forgiving.