Cloves are a powerful spice with numerous health benefits, but they’re not safe for everyone. In certain situations, cloves can irritate the stomach, thin the blood, or interact with medications. Knowing when to avoid them is just as important as understanding their benefits.
This medically accurate guide explains who should be cautious with cloves, why, and what risks they may face.
1. People With Stomach Ulcers or Gastritis
Why Avoid:
- Cloves, especially clove oil, can irritate the stomach lining.
- They stimulate acid production, which may worsen inflammation.
Risks:
- Increased gastric pain
- Burning sensations
- Delayed ulcer healing
Forms to Avoid:
- Clove oil
- Raw cloves
- Clove tea on an empty stomach
2. Individuals With Bleeding Disorders
Why Avoid:
- Cloves contain eugenol, which naturally thins the blood.
Risks:
- Higher risk of bleeding
- Nosebleeds or bruising
- Dangerous before or after surgery
Conditions Concerned:
- Hemophilia
- Thrombocytopenia
- Von Willebrand disease
- Any disorder affecting clotting
3. People Taking Blood-Thinning Medications
At-Risk Medications:
- Warfarin
- Aspirin
- Clopidogrel (Plavix)
- Heparin
Possible Consequences:
- Excessive bleeding
- Internal hemorrhage
- Blood in urine or stool
- Prolonged bleeding from minor cuts
Important: Never combine cloves with anticoagulants without medical supervision.
4. Pregnant Women (Especially in Early Pregnancy)
Why Avoid:
- High doses may stimulate uterine contractions.
- Potential risk of miscarriage during the first trimester
- Gastrointestinal irritation (nausea)
Safe Use: Very small culinary amounts only.
5. Breastfeeding Women
Why Avoid:
- Clove oil or strong extracts can change the taste of breast milk and may irritate an infant’s stomach.
- Possible allergic reactions or colic in babies
6. Children Under 12 Years Old
Why Avoid:
- Clove oil is highly concentrated and can be toxic.
Risks:
- Burning of mouth and throat
- Seizures or liver damage
- Breathing difficulties
Important: Children should never consume clove oil or concentrated clove remedies.
7. People With Liver Disease
Why Avoid:
- Eugenol is metabolized by the liver and can cause stress at high doses.
Risks:
- Worsening fatty liver
- Elevated liver enzymes
- Potential liver toxicity
8. Individuals With Low Blood Sugar (Hypoglycemia)
Why Avoid:
- Cloves naturally lower blood sugar, which can be dangerous for hypoglycemic individuals.
Possible Symptoms:
- Dizziness
- Sweating
- Shaking
- Fainting
9. Anyone Allergic to Cloves or Eugenol
Symptoms:
- Skin rash
- Swelling of lips or tongue
- Difficulty breathing
- Palpitations
Tip: Those allergic to cinnamon, nutmeg, or bay leaves may also be sensitive to cloves.
10. People With GERD or Chronic Acid Reflux
Why Avoid:
- Cloves increase stomach acid, which can worsen heartburn and irritate the esophagus.
⚠️ Clove Forms That Require Caution
❌ Clove essential oil (internal use) – Highly concentrated, can damage tissues
❌ Clove tinctures – Strong extraction with alcohol, risk of irritation
❌ Clove supplements – Risk of overdose
❌ Raw cloves in large amounts – Can irritate mouth, throat, and stomach
✅ Safe Use:
- Small culinary amounts for adults in good health
- Light clove tea 1–2 times per week is generally safe
🛑 Disclaimer
This article is for informational purposes only and does not replace professional medical advice. Always consult a qualified healthcare provider before using cloves therapeutically, especially if you have medical conditions, are pregnant or breastfeeding, or are taking medication.
