Potentilla

Potentilla: A Comprehensive Reference

1. Identity and Botanical Classification

Potentilla is a large genus of flowering plants belonging to the family Rosaceae, subfamily Rosoideae. The genus is mainly distributed in temperate, arctic, and Alpine zones of the Northern Hemisphere. There are 200–500 species of Potentilla worldwide, among which 90 species are widely distributed in China and have a long history of ethnic medicinal use. The common name "cinquefoil" (from the French for "five-leaf") is applied broadly to many members of the genus, though species vary considerably in leaf count and form.

The most prominent medicinal species are:

• Potentilla erecta (L.) Raeusch. — commonly called tormentil, erect cinquefoil, or Bloodroot. Synonyms include Potentilla tormentilla and Tormentilla erecta. It is a small yellow wildflower found across Ireland, the UK, and Europe. It is a small, rhizomatous, perennial herb with yellow leaves and flowers.
• Potentilla anserina L. — commonly called silverweed or goosewort. It is a low-growing herbaceous plant of the Rosaceae family, found in the temperate zone around the globe and most commonly on sandy or rocky clay soils in Europe, Siberia, the Far East, and Central Asia. Its taxonomic synonym Argentina anserina (L.) Rybd. is also used in some classifications.
• Potentilla alba L. — white cinquefoil, a Central European species of increasing scientific interest for thyroid-related applications. Documented evidence suggests that P. alba is a rich source of polyphenolics with a broad spectrum of activities.
• Potentilla fulgens — Himalayan cinquefoil, used in traditional medicine in Northeast India.

The genus name derives from the Latin potens, meaning "powerful," a reference to the perceived medicinal potency of the plants. The genus name, Potentilla, comes from the Latin potens, meaning powerful, while the specific epithet anserina comes from the Latin for goose.

Common Preparations and Commercial Forms

Potentilla species are commercially available in several forms. The rhizome (underground stem) and root are the primary medicinal plant parts for P. erecta and P. alba, while both aerial parts and roots of P. anserina are used. Common preparations include:

• Dried rhizome / powdered root — used in capsules and tablets; standardised dry extracts are used in European registered traditional herbal medicinal products.
• Tea (infusion or decoction) — As infusion: 1.3–2 g per 100 ml of water; as decoction: 0.8–3 g per 100 ml of water.
• Tincture — an alcoholic extract of the root. Tormentil tincture, an alcoholic preparation of the root, is sometimes applied to small cuts to stop bleeding. In Germany, tormentil rhizome is traditionally consumed as a digestive tincture, while in Ukraine, a honey-based tincture is popular as a household remedy for intestinal discomfort and inflammation.
• Mouthwash / topical rinse — infusions or tinctures diluted in water for oral mucosal inflammation.
• Standardised dry extract capsules — used in clinical studies and registered in some European countries, particularly for ulcerative colitis and thyroid applications.

In Austria and Germany, root extracts of tormentil are available for the treatment of diarrhea. Potentilla erecta is a medicinal plant described under its traditional name Tormentil in medieval herbal books and used until today in many European countries. Today, monographs for Tormentillae rhizoma in the European pharmacopeia exist.

2. Traditional and Historical Use

Ancient and Classical Europe

The genus has been known since ancient times for its curative properties. Potentilla species have been used for a long time in traditional medicine. In Greek and Latin, Potentilla species have been known under the names "Heptaphyllon" or "Pentaphyllon" and "Septifolium," sometimes as "Quinquefolium." The Greek physician Pedanius Dioscorides recommended a condensed decoction of the underground parts of Potentilla erecta to bathe a purulent facial eczema and to rinse oral cavity ulceration.

Medieval European Herbal Tradition

In the medieval ages, European physicians and botanists H. Bock, L. Fuchs, Paracelsus, Tabernaemontanus, C. Bauhin, and others described and depicted Potentilla species in their herbal books. Historically, 17th-century herbalist Nicholas Culpeper praised tormentil for its ability to stop bleeding and control excessive fluid loss in the body.

Irish and British Folk Medicine

The root of tormentil (Potentilla erecta), a small yellow wildflower that grows across Ireland, the UK, and Europe, was used for centuries in Irish and European traditional medicine, to treat wounds, sore throats, diarrhoea, and gum disease.

Traditional European Uses — By Indication

Extracts of the aerial and/or underground parts have been applied in traditional medicine for the treatment of inflammations, wounds, certain forms of cancer, infections due to bacteria, fungi, and viruses, diarrhoea, diabetes mellitus, and other ailments. Specific traditional applications documented in European folk medicine include:

• Diarrhea and gastrointestinal complaints — the most widely documented internal use across European traditions, employing decoctions of the rhizome.
• Oral and throat inflammations — rinses and gargles using tormentil infusions for sore throat, gingivitis, oral ulcers, and stomatitis. Its astringent nature helps reduce inflammation and irritation in the mouth and throat, making it useful for conditions like gingivitis and stomatitis.
• Wound healing and bleeding — Its root has a long history in traditional Irish and European medicine, where it was used to treat wounds, sore throats, diarrhea, and gum disease.
• Menstrual complaints — In Europe, silverweed is known for its antispasmodic activity and it has been used frequently to treat menstrual cramps.

Tibetan and Chinese Ethnic Medicine

Remedies containing P. anserina total herb are widely used in various folk and medical systems, particularly in traditional Tibetan medicine and folk medicine. In Tibetan medicine, P. anserina herb is used for infectious diarrhea with fever, while its roots and rhizomes are applied as an antiseptic remedy. Potentilla Anserina Linnaeus, a traditional Chinese herb with ethnic characteristics, is considered a superior material by the people of Qinghai and Tibet. Traditionally, it has been used to invigorate the spleen, quench thirst, tonify the blood, astringe to stop bleeding, and relieve diarrhea. For viral infection treatment, root extracts of Potentilla species (P. anserina) have been applied as per Tibetan traditional medicines.

Traditional Use in Russia and Ukraine

Tormentillae rhizoma (the rhizome of Potentilla erecta L.) has a long history of use in European folk medicine, especially for the treatment of diarrhea, mucosal irritation, and inflammatory conditions of the gastrointestinal tract. In Germany, tormentil rhizome is traditionally consumed as a digestive tincture, while in Ukraine, a honey-based tincture is popular as a household remedy for intestinal discomfort and inflammation. Potentilla alba has a long tradition of use in Ukraine and Russia for thyroid-related conditions. In 2012, Russian researchers reviewed a combination of clinical data and traditional application to arrive at a conclusion that Potentilla alba has been utilized with success for the treatment of hypothyroidism, goiter, hyperthyroidism, and thyrotoxicosis.

North American and Alaska Indigenous Use

Potentilla anserina L., commonly known as silverweed, is a short herbaceous perennial found in various habitats across the holarctic; its ethnobotanical significance includes diverse cultural uses and management practices, especially in the context of the Pacific Northwest Coast. The starchy roots of silverweed were an important food source for many indigenous peoples of the Pacific Northwest. The starchy root—said to taste like parsnips, sweet potatoes, or chestnuts—has served as a human food, while its leaves are valued as a healthful tea.

Indian Subcontinent (Khasi and Himalayan Traditions)

Traditionally some species of Potentilla (P. fulgens) have been used as a remedy for a variety of ailments including cancer by some local populations. Roots were used as masticatory along with betel leaves, hydrated lime, and betel nuts, as well as in various ceremonies of traditional Khasi society since time immemorial.

3. Phytochemical Constituents and Active Compounds

A total of 367 compounds have been isolated and identified from plants of this genus, including terpenoids, flavonoids, phenolic acids, tannins, and phenylpropanoids. The precise phytochemical profile varies by species and plant part, but certain compound classes recur throughout the genus.

Tannins (Dominant Constituent Class)

Tannins, and especially ellagitannins, are the most pharmacologically significant constituents of the medicinal Potentilla species. Tormentil (P. erecta) is renowned for its powerful astringent properties; its effectiveness comes from its high tannin content (15–20%), along with catechins, ellagitannins, and phlobaphene. Key individual tannins and related compounds include:

• Agrimoniin — a dimeric ellagitannin identified as a primary bioactive component. Potentilla plants are known to contain naturally occurring compounds, such as ellagic acid and agrimoniin, which have antioxidant and anti-inflammatory properties. Ellagic acid and agrimoniin compounds present in bogland tormentil have been shown to inhibit bacterial growth, indicating they may be responsible for tormentil's antimicrobial activity.
• Ellagic acid — a polyphenolic compound derived from ellagitannin hydrolysis; found throughout the genus.
• Tormentoside and pedunculagin — additional ellagitannins characterised from P. erecta rhizomes.
• Potentillin, agrimonic acid A and B — three ellagitannins—potentillin, agrimonic acid A and B—have been reported for the first time in P. anserina in recent studies.
• Condensed tannins (proanthocyanidins / procyanidins) — also present in rhizome extracts; pentamers and hexamers have been identified as particularly active free-radical scavengers.

Most of the pharmacological effects can be explained by the high amount of tannins and to a lesser extent by triterpenes, present in all plant parts.

Flavonoids

The major components of interest in Potentilla species are tannins of the ellagic-acid type, with monomeric and dimeric ellagitannins, similar to those found in green tea. The herb also contains antioxidant flavonoids (quercetin and myricetin glycosides) and proanthocyanidins. Kaempferol and its glycosides (kaempferol-3-O-rutinoside, kaempferol-3-O-rhamnoside) are also documented across several species. Compounds such as chlorogenic acid, kaempferol 3-O-rutinoside, acacetin 7-O-rutinoside, and genistein have been reported for the first time in P. anserina in recent analyses.

Phenolic Acids

Various constituents including caffeic acid, gallic acid, and ellagic acid have been characterized across the genus. In P. anserina, major phenolic compounds include caffeic acid, myricetin-3-O-glucuronide, agrimoniin, ellagic acid, miquelianin, isorhamnetin-3-O-glucuronide, and kaempferol-3-O-rhamnoside.

Triterpenes

154 different chemical substances have been isolated and identified from P. anserina, with tannins, flavonoids, and triterpenes accounting for the majority. Triterpenoid constituents and polysaccharides are the characteristic components of Potentilla anserina. Triterpenes identified in the genus include ursolic acid, oleanolic acid, and betulinic acid — pentacyclic triterpenoids associated with hepatoprotective and anti-inflammatory activities in preclinical research.

Polysaccharides and Polyprenols

Another group of components of silverweed (P. anserina) that are being investigated is the long and medium-chain polyprenols; they accumulate in the leaves at a concentration of up to 0.3% fresh weight. Polysaccharides are also a characteristic component of P. anserina, with putative immunomodulatory properties noted in preclinical literature.

4. Mechanisms of Action

Astringency and Mucosal Binding

Tormentil contains tannins that might help reduce skin inflammation, and have a drying (astringent) effect on the tissues. This drying effect may help control diarrhea and stop bleeding. Tannins bind to proteins on mucosal surfaces to form a protective layer, reducing permeability, inhibiting secretion, and conferring an antimicrobial barrier — the primary mechanism underlying the antidiarrheal and wound-healing effects.

Antioxidant Activity

Different studies have shown that Potentilla shows antioxidant and anti-inflammatory properties. The antioxidant effect of P. erecta has been proven ex vivo, on mucosal biopsies from patients with UC, resulting in superoxide scavenging and inhibition of free radical generation. The high content of ellagitannins and flavonoids is central to these radical-scavenging properties.

Anti-Inflammatory Mechanisms

Research findings indicate that tannins directly scavenge reactive oxygen species (ROS) via their polyphenolic structure, mitigate oxidative damage, upregulate antioxidant enzyme expression, and suppress pro-inflammatory cytokine secretion. Agrimoniin-enriched fractions of P. erecta have been specifically investigated for their anti-inflammatory effects in experimental models.

Antimicrobial Mechanisms

Research has shown that ellagic acid and agrimoniin inhibit bacterial growth by scavenging iron — a nutrient that is essential for bacterial growth. This iron-chelating mechanism represents a novel mode of antimicrobial action, distinct from conventional antibiotic targets, and may contribute to anti-biofilm and broad-spectrum activity.

Spasmolytic Activity

The gynecological indication for P. anserina is based on pharmacological studies showing that the herb increases the tonus of the isolated uterus in various animal species. The precise spasmolytic mechanism in smooth muscle has not been fully characterized in human pharmacological studies.

5. Scientific Evidence by Area of Use

5.1 Diarrhea and Gastrointestinal Inflammation

Regulatory Recognition

The German Commission E approves the use of tormentil for treating diarrhea and inflammation of the mouth and pharynx. A monograph for Tormentillae rhizoma in the European Pharmacopoeia, as well as a monograph of the Herbal Medicinal Products Commission as a drug for traditional use, exist. The European Medicines Agency (EMA) has published a Community Herbal Monograph for Potentilla erecta (L.) Raeusch., rhizoma, accessible through its official website.

Human Clinical Evidence — Rotavirus Diarrhea in Children (RCT)

The most robust human clinical study on Potentilla diarrhea treatment is a randomized, double-blind, placebo-controlled trial. The trial was conducted at Children's Hospital for Infectious Diseases #3, St. Petersburg, Russia, in 40 children ranging in age from 3 months to 7 years with rotavirus diarrhea. Two groups were constructed: a treatment group of 20 children treated with tormentil root extract, and a control group of 20 children who received a placebo. All patients received three drops of tormentil root extract or placebo per year of life, three times daily until discontinuation of diarrhea, or a maximum of five days. The administration of tormentil root extract in controlled doses shortened the duration of rotavirus diarrhea and decreased the requirement for rehydration solutions. Tormentil root extract appeared to be an effective measure to treat rotavirus diarrhea in children. More specifically, in the treatment group, 8 of 20 (40%) children were diarrhea-free 48 hours after admission to the hospital, compared with 1 of 20 (5%) in the control group (P < 0.0001).

Limitations: This is a single, small trial (n=40) conducted at one center in 2003. Results have not been replicated in larger, multicenter trials. The study's small size limits generalizability.

Human Clinical Evidence — Ulcerative Colitis (Open-Label Study)

A clinical study was performed in 16 active ulcerative colitis (UC) patients receiving tormentil extract in escalating doses from 1200 to 3000 mg/day for 3 weeks. The treatment with tormentil extract was found to be safe, with the dose of 2400 mg/day being the most effective.

Limitations: This was an open-label, dose-escalating study without a control group, published in the Journal of Clinical Gastroenterology (2007). The absence of a placebo arm limits conclusions about efficacy, and the small sample size (n=16) makes this a preliminary signal only.

Overall Assessment — Diarrhea/GI

Taken together, all in vitro and in vivo investigation data support the traditional use for treatment of diarrhea and mucosal inflammation despite a lack of sufficient clinical studies. Evidence for diarrhea is the strongest within the genus, with one RCT providing moderate supporting evidence for acute rotavirus diarrhea in children, backed by a well-established mechanistic rationale, and regulatory recognition in Europe.

5.2 Thyroid Gland Disorders (Potentilla alba)

Potentilla alba (white cinquefoil) has attracted clinical attention primarily in Eastern Europe for thyroid applications. Clinical studies confirm that Potentilla alba may improve thyroid function.

A systematic analysis of the results of 3 independent open-label clinical studies performed in accordance with requirements of evidence-based medicine that involved the herbal medicinal product Alba® (root extract of white cinquefoil) was carried out. Therapeutic options of Alba® use in various thyroid gland pathologies were presented.

One study used 92 patients diagnosed with nodular or multinodular euthyroid goiter, while 36 patients were used as a control group. The tested patients were given the drug containing Potentilla alba extract for two months, followed by further diagnostic testing.

Studies in humans support the ethnomedical use of P. alba as a monotherapy or as part of a comprehensive therapy for different thyroid gland impairments. However, despite promising results, the underlying mechanism of action, bioavailability, and pharmacokinetics of the main active compounds are still unknown. Therefore, further studies should focus deeply on these aspects to fully reveal their potential, especially clinical studies.

Limitations: The available clinical studies on P. alba and thyroid function have been primarily conducted in Russia and Ukraine, many as open-label designs without blinding or placebo controls. They have not been replicated in large-scale randomized controlled trials in other populations. The active constituent responsible for thyrotropic effects has not been definitively identified.

5.3 Oral Mucosal Inflammation

The use of tormentil preparations as a mouthwash or gargle for minor oral mucosal inflammation is recognized by both the German Commission E and the EMA herbal monograph on traditional use grounds. Tormentil tincture is also added to water and used as a rinse or mouthwash to treat sore mouth and throat. Direct clinical evidence from randomized controlled trials specific to this indication is limited; the regulatory recognition is based on long-standing traditional use combined with plausible pharmacological rationale (tannin-based astringency and anti-inflammatory action).

5.4 Antimicrobial Activity — Including Antibiotic-Resistant Pathogens

Research has shown that not only does tormentil have antimicrobial activity, it may also be powerful enough to fight microbes that are resistant to modern antibiotics. Laboratory studies of bogland-collected P. erecta extracts found that specific compounds — ellagic acid and agrimoniin — inhibited bacterial growth by scavenging iron essential for bacterial growth.

Evidence status: All antimicrobial evidence is currently in vitro (cell culture and laboratory models). No human clinical trials have evaluated Potentilla for the treatment of bacterial infections in humans. Results are preliminary and cannot be extrapolated to clinical use without further research.

5.5 Antioxidant and Anti-inflammatory Activity

The medicinal materials made from Potentilla plants mainly have antioxidative, blood sugar-lowering, anti-inflammatory, anti-tumor, cardiovascular system-protecting, neuroprotective, and hepatoprotective activities. These conclusions are derived primarily from in vitro and animal studies. The ex vivo demonstration of antioxidant effects in biopsies from UC patients provides a limited bridge to human relevance.

Evidence status: Predominantly in vitro and animal-model data. Human clinical evidence for these specific endpoints (antioxidant, anti-inflammatory as primary outcomes) is sparse and generally embedded within the UC and thyroid clinical studies described above.

5.6 Antidiabetic (Hypoglycemic) Activity

In vitro and in vivo pharmacological studies have been reviewed focussing on antihyperglycemic activities of Potentilla species. Preclinical studies suggest mechanisms including inhibition of carbohydrate-digesting enzymes and improvement of insulin sensitivity. Evidence status: Evidence is currently limited to in vitro assays and animal models. No adequately powered human clinical trials evaluating Potentilla species for glycemic control have been published.

5.7 Hepatoprotective Activity

P. anserina is rich in nutrients and active ingredients, and thus exhibits excellent pharmacological activities such as anti-inflammatory, antibacterial, immunomodulatory, and hepatoprotective properties. Triterpenes isolated from P. anserina have been specifically investigated as hepatoprotective agents in Tibetan traditional medicine contexts, with preclinical models supporting this application. Evidence status: Preclinical (in vitro and animal) only; no human clinical trials.

5.8 Gynecological Uses (Dysmenorrhea, PMS) — P. anserina

Potentilla anserina L. (Rosaceae) is known for its beneficial effects in prevention of pre-menstrual syndrome (PMS). For this reason, P. anserina is processed into many food supplements and pharmaceutical preparations. The pharmacological basis relies on observed spasmolytic properties in animal uterine tissue. Evidence status: No placebo-controlled human clinical trials confirm efficacy for dysmenorrhea or PMS. Use is based on traditional practice and pharmacological plausibility.

6. Body Systems and Health Areas of Association

• Gastrointestinal system — diarrhea (especially rotavirus-induced), mucosal inflammation, gastroenteritis, dysentery, irritable bowel conditions, ulcerative colitis.
• Oral cavity / ENT — gingivitis, stomatitis, pharyngitis, mouth ulcers, sore throat.
• Endocrine system (thyroid) — hypothyroidism, euthyroid goiter, hyperthyroidism, thyrotoxicosis (primarily P. alba).
• Integumentary system — wound healing, minor burns, frostbite, hemorrhoids, skin ulcerations (topical use).
• Reproductive/gynecological system — dysmenorrhea, PMS, menstrual bleeding (primarily P. anserina).
• Cardiovascular/hemostatic — hemostasis (stopping minor bleeding), historically attributed to astringent tannin action.
• Immune/antimicrobial — potential application against antibiotic-resistant bacteria (in vitro only).
• Hepatic — hepatoprotective properties attributed to triterpenes (preclinical only).

7. Dosage Forms and Dosages Reported in Sources

Dosages documented in regulatory monographs and clinical studies are summarized below. These figures are drawn directly from cited sources and pertain exclusively to Potentilla erecta rhizome unless otherwise specified.

EMA Community Herbal Monograph — P. erecta Rhizome (Oral, for diarrhea)

• Dry extract (tablet/capsule): Single dose: 400 mg, 3 times daily.
• Tincture (1:5): Single dose: 1–2 ml in water, 3 times daily.
• Liquid extract (1:1): Single dose: 2–4 ml, 3 times daily.
• Infusion: 1.3–2 g per 100 ml of water.
• Decoction: 0.8–3 g per 100 ml of water.

EMA Community Herbal Monograph — P. erecta (Oral rinse, for mouth/throat inflammation)

• Rinse the mouth several times daily using diluted infusions or tinctures.
• Single dose: 1–5 ml per 150 ml of water (for oral rinse preparations).

Manufacturer-Reported Adult Dosage (Austria/Germany)

• The usual dose of root extract of tormentil recommended by manufacturers to adults is 200 mg.

Dosage Used in Pediatric RCT (Rotavirus Diarrhea)

• Three drops of tormentil root extract or placebo per year of life, three times daily until discontinuation of diarrhea, or a maximum of five days.

Dosage Used in Ulcerative Colitis Open-Label Study

• 16 active UC patients receiving tormentil extract in escalating doses from 1200 to 3000 mg/day for 3 weeks, with 2400 mg/day identified as the most effective dose.

8. Safety Considerations and Interactions

General Safety Profile

Roots of tormentil have been considered safe and nontoxic historically. Clinical trials have found no signs of any toxic effects after administration of a P. erecta rhizome extract for the treatment of ulcerative colitis in adults and rotavirus-induced diarrhea in children. Thus, P. erecta rhizome extracts should be considered safe with respect to acute toxicity when applied to humans.

Gastrointestinal Adverse Effects

Potentilla seems safe for most people, but it can cause stomach irritation. This is consistent with the known action of high-tannin herbal preparations on gastric mucosa in susceptible individuals.

Tannins and Iron Absorption

Because Potentilla preparations — especially P. erecta rhizome — contain very high concentrations of tannins (up to 15–20%), their potential to chelate dietary iron is a relevant consideration. One of the most well-documented concerns of tannin consumption is interference with iron absorption. Tannins readily bind with non-heme iron, forming insoluble complexes that the body cannot easily absorb. This can be a concern for individuals with existing iron deficiencies or those following vegetarian and vegan diets, who rely primarily on non-heme iron sources. However, evidence suggests that individuals can adapt to antinutritional factors over time. Repeated consumption of antinutritional factors has been shown to blunt reductions in iron bioavailability in animal and clinical models alike.

Route-Dependent Hepatotoxicity Risk of Tannins

Tannins administered per rectum or topically have been linked to hepatotoxicity, whereas oral consumption of condensed tannins has not, suggesting that inherent defense mechanisms may exist that respond to tannin consumption over time. Oral preparations at standard doses have not been associated with hepatotoxicity in the available clinical literature.

Potential Reproductive Safety Signal (P. alba)

A preclinical animal study examined the thyrotropic drug from P. alba (PADE) in male rats. PADE treatment of male rats negatively affected sperm and testicular Leydig cell morphology. However, these changes did not affect male fertility and offspring development. It is currently not known whether PADE treatment may affect human male fertility and offspring development; therefore, results from this animal study need to be confirmed in humans. It is essential to investigate whether Potentilla alba has any adverse effects on the male or female reproductive systems.

Pregnancy and Breastfeeding

Not enough is known about the use of Potentilla during pregnancy and breast-feeding. The spasmolytic activity observed in animal uterine studies for P. anserina creates theoretical concern for use during pregnancy, though this has not been evaluated in human studies.

Pharmacological Interactions

No documented pharmacokinetic or pharmacodynamic drug interactions with Potentilla preparations have been established in controlled human studies. Based on the constituent profile, a plausible interaction exists between high-tannin tormentil preparations and oral iron supplements (where simultaneous administration may reduce iron absorption) and potentially with other drugs whose absorption is affected by protein binding or chelation. Separating tormentil ingestion from iron supplementation by at least two hours is a precaution consistent with general guidance on tannin-containing herbals.

Duration of Use

Tormentil is a traditional herbal medicine with a focused evidence base, mainly for mild diarrhea and minor inflammation of the oral mucosa. The EMA monograph covers short-term traditional use; no long-term safety studies in humans have been published to support extended use beyond the durations evaluated clinically.

Resource Sustainability Note (P. alba)

The other problem with the use of P. alba extracts is its gradually ending resource in its natural habitat. The highest demand for the underground parts of P. alba would result in the extinction of this plant. This represents a supply-chain and sustainability concern relevant to the long-term availability of this species.

References

• PubMed: Research progress on chemical constituents and pharmacological activities of Potentilla (2022)
• ScienceDirect: Potentilla — A review of its phytochemical and pharmacological profile (Tomczyk & Latté, 2009, Journal of Ethnopharmacology)
• ScienceDirect: A systematic review on botany, ethnopharmacology, phytochemistry and pharmacology of Potentilla anserina L. (2024)
• PubMed: A systematic review on botany, ethnopharmacology, phytochemistry and pharmacology of Potentilla anserina L. (2024)
• ScienceDirect: Recent phytochemical and pharmacological advances in the genus Potentilla L. sensu lato — 2009 to 2020
• PubMed: Effect of oral administration of tormentil root extract on rotavirus diarrhea in children — RCT (Subbotina et al., 2003)
• Medscape: Potentilla Extract Reduces Rotavirus Diarrhea Duration in Children (2003)
• European Medicines Agency: Tormentillae rhizoma — Herbal Medicinal Product
• EMA: Community Herbal Monograph on Potentilla erecta (L.) Raeusch., rhizoma (HMPC)
• Planta Medica: New Perspectives for the Use of Potentilla alba Rhizomes (Augustynowicz et al., 2021)
• PubMed: Clinical application of Potentilla alba for prevention and treatment of thyroid gland pathologies (Kaminskii et al., 2015)
• BMC Complementary Medicine and Therapies: Effects of a new thyrotropic drug isolated from Potentilla alba on the male reproductive system of rats (2021)
• Molecules (MDPI): Anti-Inflammatory Effects of Agrimoniin-Enriched Fractions of Potentilla erecta (2016)
• PMC: Anti-Inflammatory Effects of Agrimoniin-Enriched Fractions of Potentilla erecta (full text)
• ResearchGate: Potentilla erecta, tormentil (Kraft, review article)
• PMC: Phytochemical composition of Potentilla anserina L. analyzed by GC-MS and LC-MS metabolomics (2013)
• PMC: Phenolic Profile of Potentilla anserina L. of Siberian Origin (2018)
• The Conversation: Wildflower once used to treat wounds and sore throats shows promise in fighting dangerous superbugs (2026)
• PMC: In Vitro Evaluation of Antioxidant and Cytokine-Modulating Activity of Tormentil Rhizome Extract (2025)
• ResearchGate: Determination of Acute Toxicity of the Aqueous Extract of Potentilla erecta Rhizomes in Rats and Mice
• ScienceDirect Topics: Potentilla — Overview
• ScienceDirect Topics: Potentilla erecta — Overview
• Current Developments in Nutrition: The Impact of Tannin Consumption on Iron Bioavailability and Status (2022)
• ITM Online: Silverweed — Potentilla Species Used in Herbal Medicine
• University of Alaska Ethnobotany: Silverweed — Harvest and Propagation