# Plant Monograph: Butternut Bark
**Name of plant:**
Butternut Bark
**Catch phrase (Carmina Gadelica or traditional invocation if available):**
No traditional Carmina Gadelica invocation specific to Butternut has been recorded. Among North American herbalists, Butternut was often regarded as a "gentle purger" and a cleansing tree of the forest.
**Family:**
Juglandaceae
**Genus and species:**
*Juglans cinerea*
**Other names:**
* White Walnut
* Oil Nut
* Lemon Walnut
* Butternut Tree
* Walnut of the North
* Jugland Bark
* English herbalists sometimes referred to it as White Walnut Bark
**Brief introduction:**
Butternut is a deciduous tree native to eastern North America. Closely related to Black Walnut, it produces edible oily nuts and has historically been valued for its medicinal inner bark. Indigenous peoples and early settlers used the bark primarily as a laxative and digestive remedy. Although less common today, Butternut Bark remains a historical herbal medicine noted for its mild cathartic and hepatic actions.
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## Traditional uses:
* Relief of constipation
* Gentle bowel cleansing
* Liver support
* Treatment of intestinal sluggishness
* Elimination of intestinal parasites
## Historical use:
* Used by Indigenous North American peoples as a cathartic
* Employed by Eclectic physicians for chronic constipation
* Used during the American Civil War as a laxative
* Included in spring cleansing tonics
* Given for jaundice and sluggish liver conditions
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## Parts used and method of use:
* Inner bark
* Root bark
Used as:
* Decoction
* Powder
* Fluid extract
* Tincture
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## Use in healing (modern herbal practice):
* Occasional constipation
* Digestive sluggishness
* Traditional liver support formulas
* Mild bowel cleansing preparations
* Historical detoxification protocols
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## Pharmacology and biochemistry:
* Naphthoquinones
* Tannins
* Juglone-related compounds
### Mechanisms:
* Stimulates intestinal motility
* Increases bowel evacuation
* May mildly promote bile secretion
**Overall profile:**
Butternut Bark is primarily a stimulant laxative with traditional applications in digestive and hepatic support. Modern use is limited due to the availability of safer and better-studied alternatives, but it remains of historical interest in North American herbal medicine.
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## Common dosage:
* Dried bark decoction: 1–2 g daily
* Powdered bark: 250–1000 mg daily
* Tincture (1:5): 2–5 mL up to 3 times daily
* Fluid extract: As directed by qualified herbal practitioners
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## Safety factors (including side effects):
* Excessive use may cause diarrhea
* Abdominal cramping may occur
* Avoid during intestinal obstruction
* May aggravate inflammatory bowel conditions
* Long-term laxative use may contribute to bowel dependency
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## First aid / adverse reaction response:
* Diarrhea: Discontinue use and maintain hydration
* Abdominal cramping: Reduce dose or discontinue
* Severe gastrointestinal distress: Seek medical evaluation
* Allergic reaction: Stop use and obtain medical attention
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## Drug interactions:
* May reduce absorption of oral medications due to accelerated bowel transit
* May enhance effects of other laxatives
* Potential additive electrolyte depletion with stimulant laxatives
* Use cautiously with medications requiring stable absorption
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## Horticultural requirements:
* USDA / Canadian zone: 3–7
* Soil pH: 6.0–7.5
* Light requirements: Full sun
* Moisture: Moderate, well-drained soil
**Other notes (growth habit, harvest timing, etc.):**
* Large deciduous hardwood tree
* Produces edible oily nuts in autumn
* Inner bark traditionally harvested in spring
* Found in mixed hardwood forests and river valleys
* Propagated primarily by seed
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## Sampling of clinical reports / studies:
* Few modern clinical trials have examined Butternut Bark specifically.
* Pharmacological investigations confirm the presence of laxative-active quinone compounds.
* Phytochemical studies identify tannins, naphthoquinones, and juglone-related constituents.
* Ethnobotanical records document extensive use by Indigenous peoples and nineteenth-century Eclectic physicians.
* Overall assessment of evidence: Traditional evidence for laxative activity is strong, but modern clinical evidence is limited. Contemporary use has largely been replaced by better-studied herbal and pharmaceutical alternatives.
Educational Use Only: The information presented on this page is provided for educational, historical, and informational purposes only. ArdNemeton na Tuatha and Bhùth Draoi do not provide medical advice. Always consult your physician and pharmacist before using any herb, mushroom, supplement, or botanical product for medicinal purposes. Traditional uses described herein do not constitute medical claims.