Black walnut, derived from the hulls of Juglans nigra, has a long history of use in traditional herbal practice, particularly for digestive and skin-related concerns. Research suggests that compounds found in black walnut hulls, including juglone and various tannins, exhibit notable antimicrobial and antifungal properties in laboratory settings, which has fueled interest in its potential role in supporting the body's natural defenses against unwanted organisms. Studies indicate that these same tannin-rich compounds may offer mild astringent effects that could benefit skin health and digestive comfort, though much of the current evidence comes from in vitro research rather than large-scale human trials. As with many traditional botanicals, further clinical investigation is needed to fully understand its effects, safety profile, and optimal applications.
Compare this supplementResearch suggests that black walnut, particularly compounds derived from its husks, has been studied for properties t...
View studies →Research on Black Walnut for skin health is essentially nonexistent in the available evidence base. The single linked...
View studies →These are commonly referenced dosage ranges for this supplement. They are not medical recommendations. Always consult a healthcare provider before supplementing.
| Form | Dose range | Frequency | Studied for | Source |
|---|---|---|---|---|
| Capsule | 500–1,000 mg | Daily | Digestive health, general gut support | Common in traditional herbalism and commercial supplement guidelines |
| Extract | 250–500 mg | Three times daily | Antimicrobial properties, intestinal parasites | Traditional use and herbal product labeling; limited formal RCTs |
| Liquid | 1–2 mL | Three times daily | Antimicrobial properties, intestinal parasites | Traditional tincture use; based on herbal practice guidelines |
| Powder | 1–2 g | Daily | Digestive health, antifungal support | Traditional use; based on naturopathic and herbal medicine references |
| Topical | — | As needed | Skin health, antifungal and wound-supportive applications | Traditional topical use; limited clinical trial data available |