Chamomile Herb Side Effects: Allergies, Drowsiness & Drug Interactions

Chamomile, a daisy-family flowering plant native to Germany and Hungary, is widely used in teas, tinctures, oils, and creams. While generally safe, it can cause side effects, especially in sensitive individuals.

Common Side Effects

• Allergic Reactions: Those allergic to daisies may experience rashes, itching, throat swelling, shortness of breath, or anaphylaxis. Eye inflammation is frequently reported.
• Sedation: Excess consumption causes drowsiness—avoid driving/operating machinery. May also induce vomiting and dizziness.
• Infant Risk: Newborns/young infants may develop botulism.

Drug & Condition Interactions

• Blood Thinners (e.g., Coumadin): Chamomile contains coumarin, which may amplify anticoagulant effects.
• Blood Sugar/Pressure: Can affect levels in those with diabetes or hypertension.
• Pregnancy/Breastfeeding: Avoid—may cause miscarriage; not recommended for nursing mothers.

Guidance

Chamomile effectively eases stomach upset, minor illnesses, and menstrual cramps, but caution is essential. Side effects are rare, but not negligible. Always determine a safe dosage with a healthcare provider, especially if on medication.

Disclaimer: Informational only; not a substitute for expert medical advice.