Indications
Yarrow (Achillea millefolium) is a flowering plant used in herbal medicine. On the skin, usually as a gel or cream, it is traditionally used to soothe minor cuts, scrapes, bruises, mild skin inflammation and irritated skin, and in some products for the discomfort of piles (haemorrhoids). Taken by mouth it has traditionally been used for indigestion, bloating and loss of appetite. Scientific evidence for these uses is limited.
How It Works
Yarrow contains plant compounds such as flavonoids, tannins and essential oils (including chamazulene). Tannins have a mild tightening (astringent) effect that may help reduce oozing and minor bleeding, while the other compounds have mild anti-inflammatory and antimicrobial effects in laboratory studies.
Dosage and Administration
Use as directed on the label or by a registered practitioner. For gel or cream, clean and dry the area, then apply a thin layer usually 2 to 3 times daily. Wash hands after use unless the hands are the treated area. Do not apply to deep wounds, burns or infected skin.
Interactions
Interactions with skin use are unlikely. Products taken by mouth may add to the effect of sedatives and blood thinners such as Warfarin or Aspirin, and may affect blood pressure and blood sugar medicines. Tell your doctor about all medicines you use.
Contraindications
- Allergy to yarrow or to plants of the daisy family (such as chamomile, marigold, chrysanthemum or ragweed).
- Deep, infected or large open wounds.
- Pregnancy, for products taken by mouth.
Side Effects
Skin use may cause redness, itching or an allergic rash (contact dermatitis) in sensitive people. Yarrow may also make the skin more sensitive to sunlight. Taken by mouth it may cause stomach upset or drowsiness.
Get urgent medical help if you notice spreading redness, blistering, swelling of the face or lips, difficulty breathing, or signs of infection such as pus, fever and increasing pain.
Pregnancy and Lactation
Do not take yarrow by mouth during pregnancy, as it has traditionally been thought to affect the womb. Avoid during breastfeeding because safety is not known. Short use of a skin gel on a small area is less of a concern, but ask your doctor first.
Precautions and Warnings
For external use only if the product is a gel or cream: avoid the eyes and mouth. Test on a small area of skin first if you have sensitive skin. Stop using it if irritation develops. See a doctor for bleeding piles, wounds that do not heal within a week, or any skin problem that gets worse. Stop oral yarrow 2 weeks before surgery.
Overdose
Overuse on the skin may increase irritation. If a gel is swallowed by a child, give water and seek medical advice. Large amounts taken by mouth may cause vomiting, diarrhoea and drowsiness.
Therapeutic Class
Herbal preparation (topical soothing and astringent agent).
Storage
Store below 30°C in a dry place, away from light and out of the reach of children. Close the cap tightly after use.
Prepared by the Oshud Alo team from standard drug references. For information only; always follow your doctor's advice.