Speedwell

Speedwell (Veronica officinalis L.): A Comprehensive Reference

1. Identity and Botanical Description

Taxonomic Classification and Naming

Veronica officinalis, known variously as heath speedwell, common gypsyweed, common speedwell, or Paul's betony, is a species of flowering plant in the plantain family Plantaginaceae. It is native to Europe and western Asia and has been introduced to North America, where it is widely naturalized. The genus Veronica is exceptionally large: it is the largest genus of the Plantaginaceae family, with about 500 species widespread over most of the Northern Hemisphere and in many parts of the Southern Hemisphere.

The Veronica flower belongs to the Plantaginaceae family, a classification that underwent significant revision in the early twenty-first century when the genus was reclassified from its former placement in the Scrophulariaceae family. The genus name Veronica probably comes from the Latin adjective vera- meaning "true" and -nica meaning "image." The specific epithet officinalis indicates that this plant was considered to have medicinal properties.

Morphology

It is a herbaceous perennial with hairy green stems 10–50 cm (4–20 in) long that cover the ground in mats and send up short vertical shoots which bear soft violet flowers. The leaves are 1.5–5 cm long and 1–3 cm broad, softly hairy, and the plant flowers from May until August. This speedwell grows in open areas such as fields, meadows, and gardens, where it is sometimes grown as an edible or medicinal herb.

Common Names and Synonyms

There are many types of Veronica plants, most of them used for agricultural and ornamental purposes; however, Veronica officinalis, popularly known as common veronica, speedwell, common gypsyweed, and Paul's betony, is the one generally used for herbal remedies. Other medicinally relevant species within the genus include Veronica chamaedrys (germander speedwell) and Veronica spicata (spiked speedwell). Species within the genus include the common field speedwell (Veronica persica), the slender speedwell (Veronica filiformis), and the heath speedwell (Veronica officinalis).

Common Preparations and Dosage Forms

Traditionally, its leaves, flowers, and stems have been used for infusions, decoctions, and poultices. In modern herbal commerce, the plant is sold most commonly as a dried herb for making tea. Preparation forms include dried or fresh plant parts infused in hot water and consumed as a beverage; plant material simmered in water to extract compounds from tougher parts; plant parts crushed or moistened and placed directly on the body as a poultice; alcohol used as a solvent to extract plant constituents over time as a tincture; and a preparation created by pulverizing dried plant material into powder. Commercially, Ricola® (Laufen, Switzerland) sweets are made with V. officinalis in conjunction with other medicinal plants, used to refresh the mouth and throat.

2. Traditional and Historical Use

Medieval and Early Modern Europe

Veronica officinalis (common speedwell) has a long history of use in European traditional medicine, mainly in central eastern Europe and the Balkans. Historically, Veronica officinalis enjoyed a prominent role in European folk medicine and culture, and was widely cultivated in monastic gardens during the Middle Ages, often included in local remedies and ceremonial practices. Julian Barker, in The Medicinal Flora of Britain and Northwestern Europe (Winter Press, 2001), outlines its disappearance from the herbal armoury after its "heady days" in the 16th and 17th centuries.

Especially in the 16th and 17th centuries, Veronica officinalis was recommended for stomach and intestinal diseases, renal lithiasis, colic, and pulmonary diseases. The slightly bitter and astringent taste and tea-like smell of speedwell led to its use as a tea substitute in 19th-century France, where it was called thé d'Europe, or "Europe tea," a term the French still use as a name for speedwell today.

Folk and Regional Uses Across Europe

The main ethnopharmacological indications for V. officinalis recorded across European countries are inflammatory conditions, rheumatism, stomach ulcers, respiratory ailments, and nervous, cardiovascular, and metabolism system disorders. Veronica officinalis is used for treating liver conditions, eczema, ulceration, snake bites, wound healing, and skin lesions in Balkan traditional medicine. In Romanian folk medicine, it was used for kidney diseases, cough, and catarrh.

This species of Veronica retained a place among recognized remedies until a comparatively late period and is still employed in herbal medicine. Its leaves possess astringency and bitterness. Among the Welsh peasantry, great virtues were attributed to the speedwell. In the Valdesi valley of Italy, in the poorer villages, Veronica species are traditionally used as an inexpensive substitute for imported teas, which has been posed as an explanation of the modern use of Veronica species in recreational teas.

In the traditional medicine of Balkan peoples, Veronica officinalis, V. beccabunga, and V. spicata have been used for treating various conditions such as liver, spleen, kidney, and urinary bladder diseases; in the healing of snake stings, wounds, skin eruption, eczema, and ulcers; and as expectorants for cough and throat rinsing. Three Veronica species, namely V. officinalis, Veronica chamaedrys, and Veronica herba DAC, are used in traditional Austrian herbal drugs, and V. officinalis is a popular medicinal plant used as a commercial herbal product in many European countries.

North American Introduction

American settlers brought seeds of Paul's betony in the 1700s to New England, integrating it into local herb lore. Common speedwell is a European introduction to New England and is important in European traditional medicine, with uses ranging from internal uses (as a cough remedy and tonic) to external uses (as a salve).

Preparations in Traditional Practice

Folk healers used infusions and decoctions made from the aerial parts to soothe respiratory ailments such as coughs, bronchitis, and asthma, taking advantage of its mild expectorant properties. Externally, speedwell was used in poultices and washes for skin irritations, minor wounds, and ulcers, highlighting its gentle anti-inflammatory and healing effects. Speedwell tea was also consumed to support digestive health and address complaints like indigestion and diarrhea, showcasing its astringent and calming nature.

3. Key Constituents and Phytochemistry

Overview

More than 260 compounds have been isolated from the genus, and chemotaxonomic investigations of Veronica have revealed that iridoid glucosides — including aucubin, catalpol, and 6-O-catalpol derivatives — are characteristic of this genus. Veronica species represent a valuable source of biologically active secondary metabolites, including iridoid glycosides and phenolic compounds.

Iridoid Glycosides

Phytochemical profiling of V. officinalis reveals a rich composition of bioactive constituents, including iridoid glucosides (aucubin, catalpol, verproside), phenolic acids (p-coumaric, ferulic acids), flavonoids (luteolin, apigenin, quercitrin, quercetin), and sterols (β-sitosterol).

Among these compounds, verproside (a catalpol-derivative iridoid glycoside) has been recognized as a dominant active constituent of the species and has been extensively studied for its therapeutic potential. Phytochemical analysis of standardized extracts has identified verproside and verminoside as the most abundant iridoid glycosides in V. officinalis. Additional iridoids reported in the species include: catalpol, amphicoside, and verproside as the main iridoids and iridoid-phenolic constituents, together with alpinoside, aucubin, 6-O-veratroylcatalpol, and verminoside.

Phenolic Acids and Flavonoids

The main phenolic compounds characterized in V. officinalis were p-coumaric acid, ferulic acid, luteolin, apigenin, quercitrin, hispidulin, quercetin, and the sterol β-sitosterol. A Romanian phytochemical study using LC/MS techniques found that the main components identified and quantified were p-coumaric acid, ferulic acid, luteolin, hispidulin, and β-sitosterol, and that hispidulin, eupatorin, and eupatilin were detected for the first time in the Veronica genus.

Tannins, Resins, and Other Constituents

Earlier phytochemical analysis by Enz identified in V. officinalis: a bitter principle soluble in water and alcohol; an acrid principle; red colouring matter; a variety of tannic acid producing a green colour with ferric salts; a crystallizable fatty acid with malic, tartaric, citric, acetic, and lactic acids; mannite; and a soft, dark green bitter resin. Mayer (1863) found evidences of an alkaloid and a saponaceous principle, and Vintilesco (1910) found a glucoside in both this species and in Veronica chamaedrys.

4. Established Mechanisms of Action

Anti-Inflammatory Mechanisms

In vitro research has demonstrated that Veronica officinalis inhibits gene and protein expression of the chemokine eotaxin in A549 lung epithelial cells, which is essential for recruitment of inflammatory-associated cells in lung diseases, and that release of the inflammatory mediator PGE2 was diminished through inhibition of COX-2 expression via the NF-κB signaling pathway in TNF-α-activated A549 cells.

In a cell-line study evaluating the anti-inflammatory action of V. officinalis extract in allergic inflammatory lung diseases using A549 human lung epithelial cells, the extract (at concentrations of 40 to 160 μg/mL) inhibited in a dose-dependent manner the release of the main pro-inflammatory mediators IL-6 and IL-8, prostaglandin E2, and eotaxin.

Verproside (a catalpol-derivative iridoid glycoside found in Veronica officinalis and Verbascum phlomoides) has demonstrated strong anti-inflammatory activity in COPD pathology, closely linked to chronic inflammation and mucus hypersecretion. Verproside significantly reduces the expression levels of TNF-α-induced MUC5AC mRNA and protein by inhibiting both NF-κB transcriptional activity and the phosphorylation of its upstream effectors such as IκB kinase (IKK)β.

Antioxidant Mechanisms

The antioxidant potential investigated by Trolox equivalent antioxidant capacity (TEAC) and EPR spectroscopy revealed that V. officinalis and V. orchidea extracts presented similar antioxidant capacities. The phenolic compounds p-coumaric acid and ferulic acid, as well as flavonoids such as luteolin and quercetin, are recognized contributors to this antioxidant activity.

Antimicrobial Mechanisms

In a study by Mocan and collaborators, V. officinalis, V. teucrium, and V. orchidea were investigated for their antimicrobial effects against anaerobic bacterial strains. V. officinalis showed MIC and MBC values of 62.5 mg/mL, with the most sensitive strain being Peptostreptococcus anaerobius. All analyzed species contained both caffeic and chlorogenic acids, and the richest source of caffeic acid was V. officinalis.

Regarding antimicrobial activity, Staphylococcus aureus, Listeria monocytogenes, and Listeria ivanovii were the most sensitive strains across the studied Veronica species, with MIC values between 3.9 and 15.62 mg/mL.

Cytotoxic Activity of Iridoids (In Vitro)

An investigation of the cytotoxic activity of iridoid glucosides including aucubin, catalpol, 6-O-acetylcatalpol, veronicoside, catalposide, verproside, amphicoside, veratroylcatalposide, verminoside, and aquaticosides B and C isolated from different Veronica species found that the cytotoxic activity was determined against Hep-2 (human epidermoid carcinoma), RD (human rhabdomyosarcoma), L-20B (transgenic murine L-cells), and Vero (non-cancerous) cell lines using the MTT method. Verminoside, amphicoside, and veronicoside exhibited cytotoxic activity in the concentration range of 70–355 µM, while acetylcatalpol, aquaticosides B and C, catalposide, veratroylcatalposide, and verproside showed cytostatic activity. Apoptotic cell death was observed as the effect of verminoside in histological analysis. These findings are preliminary and limited to in vitro models.

5. Scientific Evidence by Area of Use

5.1 Respiratory and Lung Inflammation

This is the most studied area for V. officinalis at the cellular level. Extracts from Veronica officinalis are traditionally used for the treatment of lung diseases; however, the effective compounds and the mode of action were previously unknown. Researchers analyzed the effects of a standardized Veronica extract on gene expression and signalling protein production associated with the development of inflammatory lung diseases.

The study demonstrated that Veronica officinalis has a small influence on the degranulation capacity of mast cells but inhibits gene and protein expression of the chemokine eotaxin in A549 lung epithelial cells. Furthermore, release of the inflammatory mediator PGE2 was diminished through inhibition of COX-2 expression via the NF-κB signaling pathway in TNF-α-activated A549 cells. Phytochemical analysis identified verproside and verminoside as the most abundant iridoid glycosides.

Evidence strength: The clinical potency of Veronica officinalis for lung conditions has at first to be proven in animals and subsequently in clinical trials. The available evidence is therefore limited to in vitro cell-line studies. No human clinical trials on respiratory outcomes have been published in the peer-reviewed literature.

5.2 Anti-Inflammatory Activity (General)

Phytochemically, Veronica officinalis has shown the presence of iridoids and phenolic compounds and also possesses antibacterial, antioxidant, anti-inflammatory, cytotoxic, and antiulcer activities. Modern pharmacological studies and clinical practice have demonstrated that extracts or monomeric compounds from Veronica have several pharmacological actions, such as anti-inflammatory, anti-oxidative, anticancer, antibacterial, anti-angiogenic, antineurodegenerative, neuroprotective, and hepatoprotective effects both in vivo and in vitro.

An animal model study found that a dry extract of V. officinalis grass, studied for acute toxicity and anti-inflammatory activity, was found to be a practically non-toxic substance (class V toxicity), and under the conditions of carrageenan edema showed the most expressive antiexudative activity using 150 mg/kg, slightly behind the drug of comparison diclofenac sodium.

Evidence strength: Anti-inflammatory effects are supported by multiple in vitro and some animal studies. Human clinical data remain sparse and do not constitute a body of controlled trial evidence sufficient to confirm therapeutic efficacy in humans.

5.3 Gastric and Antiulcer Activity

The antiulcer potential of V. officinalis has been explored in experimental settings. A study by Scarlat, Sandor, Tamas, and Cuparencu, published in the Journal of Ethnopharmacology (1985), investigated the experimental anti-ulcer activity of Veronica officinalis L. extracts and is one of the earliest peer-reviewed investigations of this property. While Veronica has been used historically for digestive issues like indigestion and diarrhea, robust scientific studies validating these effects in humans are currently lacking, and the traditional use is likely related to its astringent tannin content.

Evidence strength: Limited to early animal and in vitro experiments. No controlled human trials on gastrointestinal outcomes have been identified in the peer-reviewed literature.

5.4 Antioxidant Activity

The study of phenolic compounds from plants is important due to their potent antioxidant properties, the effect of which is evident in the prevention of various diseases associated with oxidative stress. For V. officinalis specifically, laboratory analyses using TEAC and EPR spectroscopy methods have demonstrated measurable antioxidant capacity attributable to its phenolic acids and flavonoids.

Evidence strength: Antioxidant capacity is well-characterized in vitro for V. officinalis extracts. Translation to human health outcomes has not been established through clinical trials.

5.5 Antimicrobial Activity

A few studies have confirmed that certain Veronica species show noticeable bioactivity such as antibacterial, antioxidant, anti-inflammatory, and cytotoxic activity. In the antimicrobial context, V. officinalis demonstrated activity against Gram-positive bacteria in laboratory settings, with MIC values measured against strains including Staphylococcus aureus, Listeria monocytogenes, and Listeria ivanovii.

Evidence strength: All antimicrobial evidence for V. officinalis is in vitro. There are no human clinical trials investigating infectious disease outcomes.

5.6 Diuretic and Renal Effects

Some Veronica species, including Veronica officinalis, have a long history of medicinal use as diuretic and diaphoretic agents, and in Romanian folk medicine it has been used for kidney diseases, cough, and catarrh, as well as indications in lung diseases and hypercholesterolemia. Different parts of Veronica species are used as a diuretic, for wound healing, and against rheumatic pains in Turkish folk medicine.

Evidence strength: Diuretic use rests entirely on traditional evidence and ethnobotanical surveys. No clinical pharmacological studies on diuretic effects in humans have been identified.

5.7 Wound Healing and Dermatological Use

Due to its antioxidant and antimicrobial actions, speedwell has been traditionally applied topically in order to disinfect wounds, speed up healing, and calm skin irritations. The plant is rich in vitamins, tannins, and the glycoside aucubin, which has anti-inflammatory, diuretic, and liver-protective actions, and speedwell extracts can be added to skin ointments to treat eczema and help heal skin irritations and wounds.

Evidence strength: Wound healing and dermatological applications are supported by traditional use and plausible mechanisms (tannin astringency, antioxidant, antimicrobial activity), but lack controlled clinical trial evidence.

6. Body Systems and Health Areas of Association

• Respiratory system: Veronica species are used in traditional medicine for the treatment of hemoptysis, laryngopharyngitis, hernia, and lung and respiratory diseases such as cough or as an expectorant.
• Digestive system: In the 16th and 17th centuries, V. officinalis was recommended for stomach and intestinal diseases and colic.
• Urinary and renal system: Some Veronica species have a long history of medicinal use as diuretic and diaphoretic agents, and aerial parts are used in Romanian traditional medicine for the treatment of kidney diseases.
• Musculoskeletal system: These plants are traditionally used in medicine for wound healing and in the treatment of rheumatism.
• Skin and integumentary system: Topical application in poultices and ointments for wound healing, eczema, ulcers, and skin irritations is documented across multiple European ethnobotanical traditions.
• Hepatic/liver system: Veronica officinalis is used for treating liver conditions in Balkan traditional medicine.
• Cardiovascular and metabolic systems: Traditional ethnopharmacological indications for V. officinalis documented in Austria include cardiovascular system and metabolism system disorders.

7. Dosage Forms and Doses Reported in Sources

Dosage figures cited in herbal references include: herbal tea made from 1–2 teaspoons (2–4 g) of dried herb steeped in 250 ml hot water for 10 minutes, taken 2–3 times daily; and tincture (1:5, 45% alcohol) at 20–30 drops in water, 2–3 times per day. These figures reflect traditional herbal practice and are not derived from controlled clinical trials.

Speedwell is best known for its use in traditional herbal infusions and decoctions, with a commonly cited preparation of 1–2 teaspoons of dried speedwell herb per 250 ml of hot water.

In the cell-line research by Gründemann et al. (2013), the V. officinalis extract was tested at concentrations of 40 to 160 μg/mL in human lung epithelial cell cultures — these are laboratory concentrations in an in vitro system, not human therapeutic doses. In the animal inflammation model, the dry extract showed the most expressive antiexudative activity at 150 mg/kg.

Plants are traditionally cut when flowering and dried for infusions. Aerial parts — leaves, stems, and flowering tops — are the parts used in all recorded preparations.

8. Safety, Quality, and Notable Considerations

General Safety Profile

Research on a dry extract of V. officinalis grass found that the studied extract belongs to practically non-toxic substances (class V toxicity according to the common toxicity classification by K.K. Sydorov, considering route of administration). Toxic effects associated with this herb have not been well documented.

Pregnancy and Lactation

There is insufficient evidence to determine the safety of this herb during pregnancy or breastfeeding.

Drug Interactions

The potential for interactions with prescription medications has not been extensively studied. Given the herb's traditional use as a diuretic, caution has been noted: potential interactions with diuretic medications exist, warranting monitoring of electrolyte levels.

Allergenic Considerations

The plant is contraindicated for individuals with known Plantaginaceae allergies.

Product Adulteration and Quality Concerns

A significant documented concern with commercial speedwell products is species substitution. A 2017 study published in Frontiers in Pharmacology (PMC5474480) found that DNA metabarcoding detected V. officinalis in only 15% of herbal products analyzed, whereas it detected V. chamaedrys in 62% of the products. The results confirmed that none of the herbal products contained exactly the species listed on the label, and all included substitutes, contaminants, or fillers.

No specified control tests are currently available either to establish the quality of derived herbal products or for the discrimination of the most common substitute, V. chamaedrys L. (germander speedwell). The use of unlabelled ingredients presents a serious safety challenge as adverse drug reactions cannot be associated with the product label and ingredients.

High-Dose Tannin Content

The tannin content of V. officinalis is relevant to safety at higher doses. The American Modern Herbal reports that tannins — one of the principal constituent classes — are responsible for the astringent properties. High doses of tannin-rich preparations could plausibly cause gastrointestinal irritation, though this has not been characterized in formal safety studies for this species specifically.

Status in Regulatory and Commercial Contexts

The regulation of herbal products varies globally and between EU member countries, with these products falling under specific legislation depending on their intended use as food, food supplements, herbal medicines, or homeopathic products. Similar to the United States and Canada, the EU currently does not have a centralized marketing authorization procedure for herbal products, but instead provides relevant methodological specifications to guarantee manufacturing quality. Regardless of widespread use, mostly as diuretics, wound-healing remedies, and in the medical treatment of cancer and respiratory diseases, there remains an absence of physiological evidence sufficient to approve any claim of therapeutic value.

9. Summary of Evidence Strength

The scientific evidence base for Veronica officinalis as a dietary supplement is best characterized as preliminary. Its anti-inflammatory properties have been characterized at the cellular and molecular level through in vitro work in human cell lines, and animal experiments have confirmed low toxicity and some anti-exudative activity. However, no randomized controlled clinical trials in humans have been published that validate any of the herb's traditional indications to a standard sufficient to support health claims. Modern pharmacological studies have demonstrated that extracts or monomeric compounds from Veronica have several pharmacological actions, such as anti-inflammatory, anti-oxidative, anticancer, antibacterial, anti-angiogenic, antineurodegenerative, neuroprotective, and hepatoprotective effects, but these results derive from laboratory and animal studies, not clinical trials in human populations. The gap between traditional use and validated clinical evidence therefore remains large.

References

• Wikipedia – Veronica officinalis
• Bacher K, et al. "Veronica officinalis Product Authentication Using DNA Metabarcoding and HPLC-MS Reveals Widespread Adulteration with Veronica chamaedrys." Frontiers in Pharmacology (PMC5474480), 2017.
• Mocan A, et al. "Phytochemical Characterization of Veronica officinalis L., V. teucrium L. and V. orchidea Crantz from Romania and Their Antioxidant and Antimicrobial Properties." International Journal of Molecular Sciences (PMC4613244), 2015.
• Bağci E, et al. "Veronica Plants—Drifting from Farm to Traditional Healing, Food Application, and Phytopharmacology." Plants (PMC6651156), 2019.
• Gründemann C, et al. "Traditionally used Veronica officinalis inhibits proinflammatory mediators via the NF-κB signalling pathway in a human lung cell line." Journal of Ethnopharmacology 145: 118–126, 2013.
• Tasheva K, et al. "Targeting Inflammation with Natural Products: A Mechanistic Review of Iridoids from Bulgarian Medicinal Plants." PMC, 2025.
• Saracoglu I, Harput US. "In Vitro Cytotoxic Activity and Structure Activity Relationships of Iridoid Glucosides Derived from Veronica species." Phytotherapy Research 26: 1019–1023, 2012.
• Xue H, et al. "Review of the Ethnopharmacology, Phytochemistry, and Pharmacology of the Genus Veronica." The American Journal of Chinese Medicine 47: 1193–1221, 2019.
• Grieve M. "Speedwell, Common." A Modern Herbal (botanical.com).
• Genus Veronica—Antioxidant, Cytotoxic and Antibacterial Activity of Phenolic Compounds from Wild and Cultivated Species. PMC12649209, 2025.
• The Herb Society UK. "Rediscovering an old friend: Speedwell (Veronica spp.)." January 2024.
• Researchgate – "Study of acute toxicity and pharmacological activity of dry extract of Veronica officinalis."
• Go Botany (Native Plant Trust). "Veronica officinalis (common speedwell)."