Shepherd’s purse (Capsella bursa-pastoris) is a traditional herb historically used to address heavy menstrual bleeding. It contains compounds like flavonoids, glycosides, and tannins, which are thought to contribute to its astringent and coagulant properties. These properties are associated with the herb’s ability to constrict blood vessels and help reduce excessive blood flow.
Forms and Preparation
Shepherd’s purse is available as dried herb for teas, liquid tinctures, and capsules, each requiring specific preparation methods.
To prepare tea, steep one to two teaspoons (about five grams) of dried plant material in one cup (180-240 ml) of boiling water. Cover and steep for 10 to 15 minutes before straining. For a more concentrated tea, some traditional approaches suggest using two tablespoonfuls of dried herb in a pint of boiling water, infusing for about 45 minutes.
Tinctures are concentrated liquid extracts, usually prepared by macerating the herb in an alcohol solution. They are often taken by mixing recommended drops with water or juice for easier consumption.
Capsules provide a convenient consumption method, often containing standardized preparations. These forms allow for consistent dosing, which can be beneficial for individuals seeking a precise amount of the herb. Dried shepherd’s purse remains viable for water-based preparations for up to a year.
Recommended Usage and Dosage
Usage and dosage for shepherd’s purse vary by form.
For tea, consume one to three cups daily. Some traditional uses suggest drinking about half a cup (125 ml) every hour during heavy flow, ideally on an empty stomach.
Tincture recommendations typically range from one to three dropperfuls (1-3 ml) two to three times daily. For heavier bleeding, one milliliter (about 30 drops) in half a cup of water three times a day, or half a teaspoon up to four times daily, mixed with water or juice, may be suggested.
It is sometimes advised to begin tincture use 7 to 10 days before the expected period and continue throughout the cycle to help lessen heavy bleeding. Dosage can be reduced as bleeding subsides. Daily tincture use might be considered for spotting between periods.
Capsule dosages often range from 500 to 1000 milligrams daily, especially for standardized preparations. Some research has explored dosages of 320 milligrams of hydroalcoholic extract twice daily.
It is important to understand that these are general guidelines, and individual responses can differ. For use extending beyond two weeks, consult a healthcare professional.
Important Safety Considerations
Shepherd’s purse has important safety considerations and potential interactions.
When taken orally in small amounts for a short duration, it is considered possibly safe for most adults. However, larger amounts may lead to adverse effects such as heart palpitations, drowsiness, or changes in blood pressure (low or high). Mild gastrointestinal discomfort or allergic reactions have also been noted. Very large doses may paradoxically lead to excessive bleeding.
Avoid shepherd’s purse during pregnancy, as it can stimulate uterine contractions and increase miscarriage risk. For breastfeeding individuals, insufficient reliable information exists; avoid use or consult a medical practitioner, as constituents may transfer into breastmilk.
Individuals with pre-existing heart conditions should use caution, as it may interfere with treatments, cause blood pressure fluctuations, or induce heart palpitations. The herb contains oxalates, which can form kidney stones, so those with kidney issues or a history of kidney stones should be cautious. Avoid if allergic to Brassicaceae family plants (e.g., cabbage, broccoli).
Potential drug interactions are a concern. Shepherd’s purse may affect blood clotting, posing risks for individuals taking blood thinners (e.g., warfarin, aspirin, heparin). Discontinue use several weeks before surgery to prevent clotting interference. The herb may interact with thyroid medications, affecting thyroid function or hormone effectiveness. Large amounts might cause excessive sleepiness; combining with sedatives could increase drowsiness or breathing difficulties. Consult a healthcare provider before using shepherd’s purse, especially if taking medications or having underlying health conditions.
When to Consult a Healthcare Professional
Herbal remedies are not a substitute for professional medical advice. Consult a healthcare provider for several scenarios related to menstrual bleeding.
Seek medical attention if you experience persistently heavy, abnormally heavy, or prolonged periods. Specific indicators for consulting a doctor include:
Menstrual periods lasting longer than seven days.
Excessive blood loss requiring sanitary protection changes every hour for several consecutive hours.
Passage of large blood clots, particularly those the size of a quarter or larger.
Bleeding that worsens after beginning shepherd’s purse.
Severe pain during periods.
Symptoms like unusual tiredness, fatigue, or shortness of breath, which can indicate anemia due to significant blood loss, warrant professional assessment. A healthcare provider can determine the underlying cause of heavy or abnormal menstrual bleeding, such as hormonal imbalances, fibroids, polyps, endometriosis, or thyroid conditions. A proper diagnosis is important for identifying underlying health issues and developing an appropriate treatment plan.