Horsetail Herb (Equisetum arvense)

By Napiers


A herbal food supplement


Equisetum arvense


Horsetail, Field Horsetail, Mare's tail




It is thought that Horsetail caused John Napier to discover logarithms.


The loose chopped dried herb.


100g / 500g Pouch. Not currently available to customers in the EU.


Vegetarians and vegans.


Infusion: About half a teaspoon to 2 teaspoons of herb to a cup of cold water, bring to the boil and leave to sit for 10 minutes. Flavour with lemon, ginger or honey if desired.

Drink up to 3 times a day unless otherwise told by a medical herbalist.

The herb can be added as a flavouring to gin, vodka and other infusions.


This herb is considered safe in food amounts. Do not take if you are allergic to this plant or other members of this plant's family (Equisetaceae). Maximum of 12g per day may be taken as a powder or capsules. Not all herbs are suitable in pregnancy, breastfeeding or for young children, or if you are unwell, have health concerns or an ongoing illness. If in doubt, please ask us, your medical herbalist or healthcare practitioner. This herb is not suitable during pregnancy. If you are taking any medication, please speak to your healthcare practitioner before using this product. Discontinue use and consult a doctor if adverse reactions occur. This product should not be used as a substitute for a varied and balanced diet or lifestyle. This product is not intended to diagnose, treat, cure or prevent any disease. Infrequent allergic reactions to this herb are possible if you are susceptible to nicotine as a hapten. Plant extracts cause few side effects when taken correctly but if a side effect is experienced please contact us.


Silica rich herb used to strengthen lungs, urinary system, hair and nails. It is useful in prostate problems and children's bed-wetting. 

Key actions: Astringent, diuretic, styptic.

In clinic: Herbalists use this herb to treat mild infections and inflammation within the genitourinary tract. 

If you are interested in the medicinal use of this herb please consult a herbalist. Herbs are generally used at medicinal strength, in blends, prescribed for each unique patient's condition.


Keep in a cool, dry place away from direct sunlight. Keep out of reach of children.

Pouches: Packaged in a biodegradable stand-up resealable pouch. Made with 45% - 60% renewable wood pulp starch. When placed into a composting environment the pouches will biodegrade to compost within 3 months.

A trust kept since 1860

Napiers the Herbalists was founded by Duncan Napier, a Victorian botanist and the most famous herbalist in Scotland.