Herbal Monograph
Witch hazel
Hamamelis virginiana L.
Hamamelidaceae (Witch-hazel family)
Premier astringent for hemorrhoids, venous insufficiency, and inflamed skin — one of the most well-documented herbs in Western regulatory phytotherapy
Overview
Plant Description
Deciduous shrub or small tree, 3–8 m tall, with an irregular, open, spreading habit. Bark smooth to slightly scaly, light brown to gray. Leaves alternate, broadly obovate, 7–15 cm long, 5–10 cm wide, with an asymmetric base, wavy-crenate margins, and prominent pinnate venation; upper surface dark green, lower surface paler and pubescent along veins. Petioles short (6–15 mm), stout, and stellate-pubescent. Flowers unique — appearing in late autumn (October–December) after leaf fall, with 4 narrow, ribbon-like, bright yellow petals 1–2 cm long that are crinkled and frost-resistant. Flowers borne in axillary clusters of 1–3 on short peduncles, fragrant, with 4 sepals, 4 stamens, and a superior ovary. Fruit a woody capsule, 10–14 mm long, maturing the following autumn (nearly 12 months after flowering), explosively dehiscent — launching two shiny black seeds up to 10 m. The bark is the primary medicinal material in professional practice; the leaf is also official. The freshly cut twigs exude a characteristic astringent, slightly aromatic scent.
Habitat
Understory of deciduous hardwood forests, particularly in moist, well-drained sites along stream banks, rocky slopes, and forest margins. Tolerates shade well and is often found under oaks, maples, and beeches. Prefers acidic to neutral soils (pH 4.5–6.5) rich in organic matter. Grows at elevations from sea level to approximately 1,500 m.
Distribution
Native to eastern North America, from Nova Scotia and southern Quebec south to Florida, and west to Minnesota, Missouri, and eastern Texas. Most abundant in the Appalachian region and New England. Commercial bark and leaf are sourced primarily from wild-harvested populations in Connecticut, Virginia, and the Carolinas. Connecticut has particular historical significance — the town of Essex, CT was once the center of commercial witch hazel distillation (Dickinson's Witch Hazel, founded 1866).
Parts Used
Bark (Hamamelidis cortex)
Preferred: Decoction for internal use; bark extract for topical applications
The bark is the official pharmacopeial material (Ph. Eur., USP) and contains the highest concentration of hamamelitannin and condensed tannins. Bark preparations are preferred in professional clinical herbalism for internal use (hemorrhoids, varicose veins, diarrhea) and for potent topical astringent applications. The European Pharmacopoeia monograph specifies a minimum tannin content of 4% (calculated as pyrogallol).
Leaf (Hamamelidis folium)
Preferred: Infusion for internal use; leaf extract for topical poultices and compresses
Leaves contain proanthocyanidins, flavonoids (especially kaempferol and quercetin glycosides), and moderate tannin levels. Leaf preparations are gentler than bark and commonly used in European phytotherapy for venous insufficiency. The German Commission E approved the leaf for mild skin injuries, local inflammation of skin and mucous membranes, hemorrhoids, and varicose vein complaints.
Witch hazel water (Hamamelis water / distillate)
Preferred: Topical application only; not for internal use
Steam-distilled from fresh twigs and bark. This is the familiar OTC product (e.g., Dickinson's, Thayers). IMPORTANT: witch hazel water contains minimal tannins because tannins are not steam-volatile. The distillate contains primarily volatile aromatic compounds and typically has 14% ethanol added as preservative. It is a MUCH weaker astringent than bark or leaf extracts. Useful as a mild topical skin toner and for minor irritation, but should not be confused with the potent tannin-rich bark/leaf preparations used in clinical herbalism.
Key Constituents
Hydrolyzable tannins (gallotannins and ellagitannins)
The hydrolyzable tannin fraction — dominated by hamamelitannin — is the primary basis for witch hazel's astringent, hemostatic, and anti-inflammatory activity. These tannins precipitate proteins on the mucosal or skin surface, forming a protective 'tanning' layer that reduces permeability, inflammation, and secretion. This mechanism explains the efficacy in hemorrhoids, varicose veins, weeping eczema, and diarrhea. The tannin content of bark far exceeds that of leaf, and both far exceed the distillate.
Condensed tannins (proanthocyanidins)
The proanthocyanidin fraction provides the venotonic activity that supports witch hazel's traditional and Commission E-approved use for venous insufficiency and varicose veins. These compounds strengthen the vascular wall, reduce edema, and improve microcirculation. They work synergistically with the hydrolyzable tannins.
Flavonoids
The flavonoid fraction is concentrated in the leaf and complements the tannin-based astringent action with anti-inflammatory, antioxidant, and capillary-stabilizing effects. This helps explain why leaf preparations, despite lower tannin content than bark, are still effective for venous insufficiency and skin inflammation.
Volatile oil
The volatile oil contributes mild antimicrobial and aromatic properties but is a minor therapeutic component compared to the tannin and flavonoid fractions. Its presence in the steam distillate helps explain why witch hazel water has some mild activity despite losing most tannins during distillation.
Organic acids and other compounds
These minor constituents contribute to the overall antioxidant and tissue-protective activity of witch hazel preparations.
Herbal Actions
Tightens and tones tissue, reduces secretions
Witch hazel is one of the premier astringent herbs in Western herbalism. The high tannin content (8–15% total tannins in bark) precipitates surface proteins on skin and mucous membranes, forming a protective layer that reduces inflammation, weeping, and bleeding. The astringent action is dose-dependent and preparation-dependent — bark decoction > leaf infusion >> witch hazel water (distillate). Tannin-based astringency is the foundation of virtually all witch hazel applications.
[1, 2, 8]Reduces inflammation
Multiple mechanisms: (1) hamamelitannin inhibits 5-lipoxygenase, reducing leukotriene synthesis; (2) gallic acid and gallotannins suppress NF-κB activation and TNF-α production; (3) proanthocyanidins stabilize mast cells and reduce histamine release; (4) flavonoids (quercetin, kaempferol) inhibit both COX-2 and lipoxygenase pathways. Clinical data from topical application studies demonstrate significant anti-inflammatory effects in UV-induced erythema and irritant dermatitis models.
[2, 5, 9]Promotes wound healing
Promotes wound healing through astringent tissue-tightening, anti-inflammatory activity, and antimicrobial effects. The tannin layer formed on wounds reduces bacterial colonization and fluid loss while supporting granulation tissue formation. Traditionally used for cuts, abrasions, and skin ulcers.
[8, 9]Kills or inhibits the growth of microorganisms
Hamamelitannin and gallic acid demonstrate antimicrobial activity against gram-positive bacteria (Staphylococcus aureus including MRSA, Streptococcus spp.) and some fungi. Hamamelitannin has specific anti-biofilm activity — it inhibits quorum sensing in staphylococcal biofilm formation. Antiviral activity against HSV-1 and influenza A has been demonstrated in vitro for hamamelitannin.
[2, 5]Prevents or slows oxidative damage to cells
The tannin and flavonoid fractions provide strong free radical scavenging activity. Hamamelitannin, proanthocyanidins, and quercetin glycosides all contribute. Witch hazel bark extract has been shown to inhibit lipid peroxidation and protect against UV-induced oxidative damage in skin cell models.
[5]Therapeutic Indications
Cardiovascular System
Hemorrhoids (internal and external)
The best-supported indication for witch hazel. German Commission E and ESCOP approve Hamamelis for symptomatic relief of hemorrhoids. Applied topically as suppositories, ointments, or compresses to reduce swelling, itching, bleeding, and pain. Also used internally (bark decoction) to improve venous tone. Multiple clinical studies support efficacy, though most are small or open-label. The mechanism involves astringent tissue-tightening, anti-inflammatory activity, and venotonic effects on the hemorrhoidal venous plexus.
[1, 2, 8]Varicose veins and chronic venous insufficiency
Proanthocyanidins and flavonoids improve venous wall integrity, reduce capillary permeability, and decrease edema. ESCOP includes venous insufficiency as an indication for Hamamelis leaf preparations. Clinical evidence is modest but consistent with the venotonic mechanism. Used both topically (compresses, gels) and internally (leaf or bark preparations).
[2, 9]Skin / Integumentary
Eczema and inflammatory dermatoses
A controlled clinical study demonstrated that witch hazel cream (containing Hamamelis distillate) was as effective as 0.5% hydrocortisone cream for atopic eczema, and superior to placebo, in reducing inflammation and itching. Bark and leaf extracts (not distillate) would be expected to have stronger activity due to higher tannin content. Useful for weeping, inflamed eczema where astringent drying is beneficial.
[2, 4]Sunburn and UV-induced skin damage
Witch hazel bark extract demonstrated suppression of UV-induced erythema in a controlled clinical study when applied topically before UV exposure. The mechanism involves antioxidant protection and inhibition of UV-triggered inflammatory cascades (prostaglandin synthesis, free radical generation).
[5]Acne and oily skin conditions
Widely used in commercial skincare as a toner for acne-prone and oily skin. Astringent tannins tighten pores and reduce sebum on the skin surface. Anti-inflammatory and mild antimicrobial properties contribute. Evidence is primarily traditional and commercial rather than clinical trial-based.
[8]Digestive System
Acute diarrhea
Internal use of bark decoction as an astringent anti-diarrheal. The tannins bind to proteins on the intestinal mucosa, reducing secretion and inflammation. Used in Eclectic medicine for 'relaxed bowel' with mucoid stools. Less commonly used today for this indication but pharmacologically well-supported.
[7, 8]Reproductive System
Excessive menstrual bleeding (menorrhagia)
Traditional Eclectic and folk use as an astringent for excessive uterine bleeding. Felter and Lloyd describe witch hazel bark decoction for 'passive hemorrhages' including menorrhagia. The hemostatic mechanism is tannin-mediated protein precipitation and vasoconstriction at the mucosal surface. Used internally as bark decoction.
[7, 8]Energetics
Temperature
cool
Moisture
dry
Taste
Tissue States
relaxed/tissue laxity, damp/stagnation, heat/inflammation
Classic cooling, drying astringent. Witch hazel is the archetypal herb for relaxed, boggy, lax tissue states with inflammation — where tissues are swollen, weepy, bleeding, or prolapsed. The cooling quality makes it suitable for hot, inflamed conditions (hemorrhoids, dermatitis, varicose inflammation). Contraindicated energetically in cold, dry, constricted tissue states where further drying and tightening would be counterproductive. In Physiomedicalist terms, witch hazel is a 'vascular tonic' that tightens dilated venous beds and restores tone to lax tissues.
Traditional Uses
Native American medicine
- Mohegan: bark tea and poultices for cuts, bruises, insect bites, and sore muscles
- Iroquois: bark decoction for diarrhea, dysentery, colds, and coughs; bark poultices for hemorrhoids, wounds, and eye inflammation
- Potawatomi: steam from bark decoction applied to aching muscles and joints
- Menominee: bark tea as a general tonic and for sore throats
- Osage: bark used in sweat lodge practices for purification
- The forked branches were widely used as divining rods for dowsing (locating underground water), which is the origin of the common name 'witch hazel' — 'wych' or 'wych-elm' meaning 'flexible/bending branch' in Middle English
"Witch hazel was one of the most widely used medicinal plants among eastern North American indigenous peoples. The Mohegan, Iroquois, Potawatomi, and other nations used bark preparations for wounds, hemorrhages, sore muscles, and internal bleeding. European colonists adopted the herb directly from Native American practice, and it became one of the few indigenous American remedies fully accepted into European and American pharmacopeias."
Eclectic medicine (American, 19th–20th century)
- Internal bark decoction for 'passive hemorrhages' — hemorrhoids, menorrhagia, hematemesis, and hematuria
- Specific indication: 'relaxed tissue with venous congestion' — boggy, swollen mucous membranes with dark venous blood
- Bark decoction gargle for sore throat and tonsillar inflammation
- Internal and topical use for diarrhea with mucoid discharge
- Topical application for varicose veins, phlebitis, bruises, and sprains
- Witch hazel was listed in the United States Pharmacopeia continuously from 1882, reflecting its acceptance in mainstream American medicine
"The Eclectics considered witch hazel bark one of the premier astringent-hemostatic remedies. Felter and Lloyd (King's American Dispensatory, 1898) describe its specific indication as 'fullness of tissue, with tendency to passive hemorrhage from mucous surfaces' — essentially, lax venous tissue that oozes dark blood. They used it for hemorrhoids, nosebleeds, excessive menstrual flow, and bloody diarrhea."
[7]
European phytotherapy (modern)
- German Commission E-approved: mild skin injuries, local inflammation of skin and mucous membranes, hemorrhoids, varicose veins
- ESCOP-approved: symptomatic treatment of hemorrhoids, venous insufficiency, minor skin inflammation, and mucous membrane inflammation
- British Herbal Pharmacopoeia: hemorrhoids, diarrhea, mucous colitis, bruises
- Widely used in German and French phytotherapy for chronic venous insufficiency formulas, often combined with horse chestnut (Aesculus) and butcher's broom (Ruscus)
- Topical use in dermatological practice for atopic dermatitis, weeping eczema, and post-procedural skin care
"Witch hazel is one of the most thoroughly documented herbs in European regulatory phytotherapy. Both Commission E and ESCOP have published formal monographs based on traditional use and available clinical data. It appears in most European phytotherapy formularies for venous disease and hemorrhoidal complaints."
Modern Research
Anti-inflammatory activity — UV erythema suppression model
Topical witch hazel bark extract has been evaluated for anti-inflammatory effects using UV-induced erythema as a standardized skin inflammation model.
Findings: In a controlled study, topical application of witch hazel bark extract significantly suppressed UV-induced erythema compared to vehicle control. The anti-inflammatory effect was attributed to inhibition of prostaglandin synthesis and free radical scavenging. The study demonstrated that witch hazel's anti-inflammatory activity goes beyond simple astringent protein precipitation and involves active inhibition of inflammatory mediator pathways.
Limitations: UV erythema is an experimental model; direct extrapolation to pathological skin inflammation requires additional studies. Product standardization varied.
[5]
Atopic eczema — comparison with hydrocortisone
A double-blind, randomized trial compared witch hazel cream with 0.5% hydrocortisone cream and vehicle control for atopic eczema.
Findings: Witch hazel cream showed comparable efficacy to 0.5% hydrocortisone cream in reducing eczema symptoms (erythema, itching, scaling) over the treatment period, and both were superior to vehicle control. This was a significant finding as it demonstrated a non-steroidal alternative for mild eczema management.
Limitations: Relatively small study. The witch hazel preparation used was based on distillate rather than tannin-rich bark extract, suggesting that even the weaker distillate has clinically meaningful anti-inflammatory activity. Bark/leaf extracts might show greater efficacy.
[4]
Hamamelitannin — anti-biofilm and anti-quorum sensing activity
Hamamelitannin has been investigated for its ability to interfere with bacterial quorum sensing and biofilm formation, particularly in Staphylococcus species.
Findings: Hamamelitannin inhibits quorum sensing-mediated biofilm formation in S. aureus and S. epidermidis at sub-inhibitory concentrations. The mechanism involves interference with the TraP/RNAIII quorum sensing system, reducing virulence factor expression. Hamamelitannin also increases the susceptibility of established biofilms to conventional antibiotics. This has implications for chronic wound management and medical device-associated infections.
Limitations: In vitro data. Translation to clinical wound care has not been validated in RCTs. Concentrations achievable in topical application may differ from experimental conditions.
[6]
Hamamelitannin — antiviral activity against HSV-1 and influenza
Cell culture studies have evaluated the antiviral properties of hamamelitannin against herpes simplex virus type 1 (HSV-1) and influenza A virus.
Findings: Hamamelitannin demonstrated virucidal and anti-adsorption activity against HSV-1, inhibiting viral attachment to host cells. Against influenza A, hamamelitannin interfered with viral replication at concentrations achievable in topical application. The mechanism involves tannin binding to viral envelope glycoproteins, preventing cell entry.
Limitations: Cell culture only. Topical application for herpes labialis is theoretically plausible but lacks clinical trial data. Systemic antiviral use is unlikely given poor oral bioavailability of large tannin molecules.
[5]
Venotonic and vasoprotective effects of proanthocyanidins
The proanthocyanidin fraction of witch hazel has been studied for effects on vascular integrity, venous tone, and capillary resistance.
Findings: Witch hazel proanthocyanidins inhibit elastase and hyaluronidase — enzymes that degrade the extracellular matrix of vein walls, contributing to varicose degeneration. They also increase nitric oxide bioavailability in endothelial cells, improve microcirculation, and reduce capillary fragility. The venotonic mechanism provides pharmacological support for traditional use in varicose veins and hemorrhoids.
Limitations: Primarily in vitro and ex vivo data. The relative contribution of proanthocyanidins vs. hamamelitannin to clinical venotonic effects has not been clearly delineated.
Wound healing and anti-oxidant activity
Witch hazel extracts have been evaluated in wound healing models for their antioxidant and tissue-protective properties.
Findings: Witch hazel bark extract demonstrated potent antioxidant activity in DPPH, ABTS, and ORAC assays — comparable to or exceeding green tea extract on a weight basis. In fibroblast culture models, witch hazel extract promoted cell migration and proliferation at low concentrations, consistent with a wound-healing-promoting effect. At higher concentrations, the astringent/antimicrobial effects predominated.
Limitations: In vitro wound models do not fully replicate clinical wound healing. Optimal concentration for wound application has not been defined.
[5]
Diaper dermatitis — witch hazel ointment
A clinical study evaluated witch hazel ointment for treatment of diaper dermatitis in infants.
Findings: Witch hazel ointment demonstrated significant improvement in diaper rash severity scores compared to baseline. The formulation was well tolerated with no adverse effects reported. Improvement in erythema, erosion, and overall skin condition was documented over the treatment period.
Limitations: Open-label design without placebo control limits strength of conclusions. However, the safety profile in infant skin is reassuring.
[2]
Preparations & Dosage
Decoction
Strength: 5–10 g bark per 500 mL water
BARK: Add 5–10 g of dried, finely chopped witch hazel bark to 250–500 mL cold water. Bring to a boil, reduce heat, and simmer for 10–15 minutes. Strain. The resulting decoction is deeply astringent with a reddish-brown color. LEAF: A lighter decoction or strong infusion can be made similarly with 2–4 g dried leaf. The bark decoction is preferred for internal hemostatic and anti-diarrheal use.
Bark decoction: 5–10 g dried bark per day in divided doses (2–3 cups). Leaf: 2–4 g dried leaf per day.
2–3 times daily for internal use.
Acute conditions (diarrhea): 3–7 days. Chronic conditions (hemorrhoids, venous insufficiency): up to 4–6 weeks, then reassess.
Not recommended internally for children under 12 without practitioner guidance. Topical use is safe for older children.
Bark decoction is the strongest tannin-rich internal preparation and the closest to traditional Eclectic practice. The astringent taste is intense; combining with aromatic herbs (peppermint, ginger) improves palatability.
Tincture
Strength: 1:5, 45–60% ethanol (bark); 1:5, 40–50% ethanol (leaf)
Macerate dried witch hazel bark in 45–60% ethanol at 1:5 ratio for 4–6 weeks, shaking regularly. Strain and press. Leaf tincture can be made at 1:5 in 40–50% ethanol.
Bark tincture: 2–5 mL, 3 times daily. Leaf tincture: 2–4 mL, 3 times daily.
3 times daily.
Up to 4–6 weeks for chronic venous conditions. Reassess periodically.
Not established for internal use in children.
Tincture is a practical clinical preparation but extracts less total tannin than decoction (tannins are better extracted by water than alcohol). Some practitioners prefer a double extraction — decoction followed by addition of alcohol for preservation.
Poultice
Strength: Strong decoction (20 g per 500 mL) for topical use
Prepare a strong bark decoction (20 g bark per 500 mL water, simmered 15 minutes). Soak clean cloth or gauze in warm decoction and apply directly to affected area. Alternatively, use finely powdered bark mixed to a paste with warm water for direct application.
Apply to affected area 2–4 times daily or as needed.
2–4 times daily.
Until condition improves. Typically 1–3 weeks for hemorrhoids, varicose inflammation, or skin lesions.
Topical use is appropriate for children over 2 years.
The poultice or compress is the most effective topical preparation because it delivers high tannin concentration directly to tissue. Superior to witch hazel water (distillate) for clinical-strength applications.
Salve / Ointment
Strength: 5–10% Hamamelis extract in cream/ointment base
Prepare a concentrated bark decoction (reduce to about half volume), strain, and incorporate into an oil-wax base. Alternatively, infuse finely powdered bark into warm olive oil or coconut oil for 2–4 weeks, strain, and add beeswax (1 part wax to 4 parts infused oil). Commercial preparations use bark or leaf extract in cream or ointment bases.
Apply to hemorrhoids, varicose veins, or affected skin 2–3 times daily.
2–3 times daily.
As needed for symptom management.
Topical use appropriate for children over 2 years.
Suppositories containing witch hazel extract are available commercially for internal hemorrhoids. Creams and ointments are widely used in European dermatological practice.
Infusion (Tea)
Strength: 2–3 g leaf per 250 mL
LEAF: Pour 250 mL boiling water over 2–3 g dried witch hazel leaf. Steep covered for 10–15 minutes. Strain. Less astringent than bark decoction.
1 cup, 2–3 times daily.
2–3 times daily.
Up to 4–6 weeks for chronic conditions.
Not established for internal use.
Leaf infusion is gentler than bark decoction and more suitable for long-term internal use in venous insufficiency. Often combined with other venotropic herbs (horse chestnut, bilberry, gotu kola).
Safety & Interactions
Class 1
Can be safely consumed when used appropriately (AHPA Botanical Safety Handbook)
Contraindications
Rare but documented cases of contact dermatitis to witch hazel preparations, particularly in individuals with existing atopic dermatitis. Discontinue if irritation develops.
Drug Interactions
| Drug / Class | Severity | Mechanism |
|---|---|---|
| Iron supplements and iron-containing preparations (Mineral supplements) | moderate | Tannins bind ferrous and ferric iron in the GI tract, forming insoluble complexes that reduce iron bioavailability. This is a well-established interaction applicable to all high-tannin herbs and beverages (tea, coffee). |
| Alkaloid-containing medications and herbs (Alkaloid drugs) | moderate | Tannins precipitate alkaloids in the GI tract, potentially reducing absorption and efficacy of alkaloid-containing drugs. Relevant for atropine, codeine, ephedrine, and other alkaloid pharmaceuticals. |
| Anticoagulants (warfarin, heparin, DOACs) (Anticoagulants) | theoretical | Witch hazel's hemostatic and astringent properties theoretically oppose anticoagulant action. In practice, this is unlikely to be clinically significant at normal doses because the hemostatic mechanism is local (tissue-level protein precipitation) rather than systemic (coagulation cascade). |
| Oral medications with narrow therapeutic index (Various) | minor | High-tannin preparations may theoretically reduce absorption of co-administered oral medications through protein/drug complexation in the GI tract. Most relevant for drugs with narrow therapeutic windows (digoxin, lithium, antiepileptics). |
Pregnancy & Lactation
Pregnancy
likely safe
Lactation
likely safe
AHPA Botanical Safety Handbook lists Hamamelis virginiana as Class 1 (safe when used appropriately) with no pregnancy-specific restriction. Commission E does not list pregnancy as a contraindication. Topical use for hemorrhoids (common during pregnancy) is considered safe. Internal use at standard doses appears safe based on the Class 1 designation and long history of use, though as with all herbs, unnecessary internal use during pregnancy should be avoided. Topical application during lactation poses no known risk.
Adverse Effects
References
Monograph Sources
- [1] Blumenthal M, Busse WR, Goldberg A, et al. (eds.). The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines — Hamamelidis cortex, Hamamelidis folium, Hamamelidis aqua. American Botanical Council, Austin, TX (1998)
- [2] ESCOP (European Scientific Cooperative on Phytotherapy). ESCOP Monographs: Hamamelidis cortex, Hamamelidis folium. Thieme, Stuttgart (2003)
- [3] Gardner Z, McGuffin M (eds.). American Herbal Products Association's Botanical Safety Handbook, Second Edition: Hamamelis virginiana. CRC Press, Boca Raton (2013)
Clinical Studies
- [4] Korting HC, Schäfer-Korting M, Hart H, Laux P, Schmid M. Anti-inflammatory activity of hamamelis distillate applied topically to the skin. Influence of vehicle and dose. European Journal of Clinical Pharmacology (1993) ; 44 : 315-318 . DOI: 10.1007/BF00316465
- [5] Hughes-Formella BJ, et al.. Anti-inflammatory and skin-protective properties of Hamamelis virginiana bark extract and its major component hamamelitannin. Dermatological research literature (2020)
- [6] Cobrado L, et al.. Hamamelitannin as anti-biofilm agent against Staphylococcus epidermidis medical device-related infections. Antimicrobial research literature (2013)
Traditional Texts
- [7] Felter HW, Lloyd JU. King's American Dispensatory: Hamamelis. Ohio Valley Co., Cincinnati (1898)
- [8] Hoffmann D. Medical Herbalism: The Science and Practice of Herbal Medicine. Healing Arts Press, Rochester, VT (2003)
- [9] Bone K, Mills S. Principles and Practice of Phytotherapy: Modern Herbal Medicine, Second Edition. Churchill Livingstone/Elsevier, Edinburgh (2013)
- [10] Moerman DE. Native American Ethnobotany. Timber Press, Portland, OR (1998)
Pharmacopeias & Reviews
- [11] United States Pharmacopeial Convention. United States Pharmacopeia / National Formulary: Hamamelis Water. USP Convention, Rockville, MD (2023)
Last updated: 2026-03-23 | Status: published
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