๐ŸŒฟWestern Herbalism

Prickly Ash

Zanthoxylum americanum

About Prickly Ash

Prickly Ash (Zanthoxylum americanum) is a herb used in the Western Herbalism tradition to help with Circulation, Arthritis, Digestive Issues, and Pain, among 1 other condition it addresses. The aerial parts and leaves are the parts traditionally used, taken internally.

Botanical background

Zanthoxylum americanum, the common prickly-ash, common pricklyash, common prickly ash or northern prickly-ash (also sometimes called toothache tree, yellow wood, or suterberry), is an aromatic shrub or small tree native to central and eastern portions of the United States and Canada. It is the northernmost New World species in the citrus (Rutaceae) family, and is the type species in its genus, which includes sichuan pepper. It can grow to 10 meters (33 ft) tall with a diameter...

Source: Wikipedia, via iNaturalist

Parts used

Aerial Parts ยท internalLeaves ยท internal
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Tea / Infusion

1โ€“3 cups daily
  • Steep 1โ€“2 tsp of dried Prickly Ash in freshly boiled water for 5โ€“10 minutes.
  • Cover while steeping.
  • Strain and drink.
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Tincture

20โ€“40 drops in water, 2โ€“3ร— daily
  • Pack dried Prickly Ash into a jar and cover with 40โ€“60% alcohol.
  • Seal and steep for 4โ€“6 weeks, shaking daily.
  • Strain and store in a dark dropper bottle.
๐Ÿ’Š

Powder / Capsule

500 mg โ€“ 1 g, 1โ€“3ร— daily
  • Grind dried Prickly Ash into a fine powder.
  • Fill size 00 capsules or stir into smoothies or honey.
๐Ÿ–๏ธ

Topical / Poultice

1โ€“2ร— daily as needed
  • Mash fresh Prickly Ash or mix the powder with a little water to form a paste.
  • Apply to the affected area for 20โ€“30 minutes.
๐Ÿซ™

Infused Oil

Massage into affected area 1โ€“2ร— daily
  • Fill a jar with dried Prickly Ash.
  • Pour over a carrier oil until submerged.
  • Leave for 4โ€“6 weeks, then strain.
  • Use topically or as a salve base.
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Herbal Bath

2โ€“3ร— per week as needed
  • Brew 4โ€“6 tbsp of Prickly Ash in 1 litre of hot water for 15 minutes, strain, and add to a warm bath.
  • Soak for 20โ€“30 minutes.

Contraindications

  • Pregnancy & breastfeeding โ€” insufficient safety data; consult your doctor
  • Children under 12 โ€” therapeutic dosage not established
  • Pre-surgery โ€” discontinue at least 2 weeks prior (potential antiplatelet effect)

Warnings

โš ๏ธ Pregnancy & Breastfeeding

Safety during pregnancy and breastfeeding has not been established for most herbal remedies. Consult your midwife or doctor before use.

โ›” Heart & Blood Pressure Medications

May interact with antihypertensive drugs, blood thinners, or cardiac medications. Do not combine without medical guidance.

โš ๏ธ Allergic Reactions

Discontinue immediately if you experience rash, itching, swelling, or difficulty breathing.

โš ๏ธ Not Medical Advice

This information is for educational purposes only. Always consult a qualified healthcare provider before using herbal remedies.

Where to find in nature

Native region

Europe, North America, Australia

Climate

Temperate

Habitat

Meadows, hedgerows, woodland edges, and cottage herb gardens

๐ŸŒฟ To see Prickly Ash growing, visit botanical gardens, university plant collections, or specialist herb nurseries near you. If foraging in the wild, always work with an expert identifier โ€” never consume a plant you are not 100% certain of.

Where to buy

In store

  • Health food stores (Whole Foods, Natural Grocers, Holland & Barrett, GNC)
  • Naturopathic clinics and integrative medicine practices
  • Specialist herbal apothecaries and herbalist practices
  • Farmers markets with herb vendors

Online

iHerb

Wide selection of standardised extracts, capsules, and powders with lab testing

Mountain Rose Herbs

Premium bulk dried herbs โ€” certified organic, ethically sourced

Starwest Botanicals

Large selection of certified organic bulk herbs and powders

Herb Pharm

High-quality liquid extracts and tinctures, rigorous quality standards

Amazon

Convenient โ€” verify brand certifications and check third-party testing

Etsy

Small-batch artisan herbalists, hand-harvested and wildcrafted herbs

Quality tips

When buying Prickly Ash, look for: certified organic labelling, clearly stated country of origin, third-party lab testing for heavy metals and pesticides, and a batch expiry date. Standardised extracts offer consistent dosing; bulk dried herbs are more economical for regular use. Avoid very cheap, unlabelled products โ€” quality varies enormously.