Black Walnut Hull Extract

Black Walnut Hull Extract (Juglans nigra)

Black Walnut (Juglans nigra) is a large deciduous tree native to eastern North America, with a long history of traditional use by Native American peoples and a well-established place in Western herbal medicine. The hull — the green outer casing of the walnut fruit — is the part used medicinally and is characterised by its exceptionally high juglone and tannin content. Black Walnut Hull has been used in Western herbal practice for centuries, particularly in the context of digestive and intestinal wellness.

Black Walnut Hull is classified as an astringent, alterative, and bitter tonic herb in Western herbal medicine. It is one of the most widely used herbs in traditional herbal practice for intestinal and eliminative wellness and is a classic ingredient in traditional digestive cleansing formulas. This extract is prepared in 60% alcohol from Black Walnut Hull.

Traditional Herbal Use

Digestive & Intestinal Wellness

Black Walnut Hull is one of the most classic herbs in Western herbal medicine for digestive and intestinal wellness. It has a long traditional history of use for intestinal and eliminative wellness and is a foundational ingredient in many traditional Western herbal digestive formulas. Its high juglone and tannin content have made it one of the most widely used herbs in traditional herbal practice for intestinal support.

Eliminative & Alterative Wellness

Black Walnut Hull is classified as an alterative herb in Western herbal medicine — a category of herbs traditionally used to support the body’s natural eliminative processes. It has a long traditional history of use in herbal formulas for eliminative and detoxification wellness.

Liver & Metabolic Wellness

Black Walnut Hull has a traditional history of use in Western herbal medicine for liver and metabolic wellness, particularly in the context of eliminative and detoxification support.

How to Use

Take 10–20 drops under the tongue or in a little juice or water, up to 2–3 times daily, or as directed by your healthcare practitioner. Not recommended for long-term continuous use without practitioner guidance.

Precautions

Not recommended during pregnancy or breastfeeding — Black Walnut Hull is contraindicated in pregnancy. Not for long-term continuous use without practitioner guidance. Nut allergy warning: derived from Juglans nigra — those with tree nut allergies should avoid use or consult their healthcare practitioner before use. High tannin content — take away from iron supplements or medications as tannins may reduce absorption. May stain teeth if held under the tongue for extended periods — rinse mouth after use.

Ingredients

Black Walnut Hull (Juglans nigra), 60% alcohol.

Stack This With

• Wormwood Extract — classic traditional pairing for intestinal wellness
• Clove Extract — classic traditional pairing for intestinal wellness
• Intestinal Cleanse Botanical Extract — complete seven-herb intestinal wellness formula
• Gumpii Extract — foundational botanical base

Want to Combine Several Tinctures?

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Used In

• Intestinal Cleanse Botanical Extract — Black Walnut Hull is one of the seven herbs in this traditional digestive cleansing formula

Related Wellness Guides

• Wellness Hub — explore all herbal guides

Naturally Occurring Compounds

• Juglone (5-hydroxy-1,4-naphthoquinone) — the primary bioactive compound in Black Walnut Hull; a naturally occurring naphthoquinone unique to the Juglans genus; one of the most researched compounds in Black Walnut
• Tannins — including ellagitannins and gallotannins; responsible for Black Walnut Hull’s characteristic astringent properties and dark staining
• Flavonoids — including quercetin and kaempferol
• Omega-3 fatty acids — naturally present in the hull
• Iodine — naturally present in small amounts
• Phenolic acids — including gallic acid and ellagic acid

Content provided for informational purposes only. Not medical advice. Not intended to diagnose, treat, or cure any condition. Consult your healthcare practitioner.