Symphytum officinale
Symphytum officinale · Accepted scientific name
Scientific literature: Very Sparse (3 studies) · ★☆☆☆☆
Symphytum officinale, commonly known as comfrey, is a versatile medicinal plant whose therapeutic potential is derived from its roots, leaves, and stems. Through various preparations such as root extracts, alcoholic extracts, and alkaloid extracts, its complex chemical profile is unlocked. The plant contains significant bioactive compounds, including flavonoids, pyrroles, lycopsamine, and 7-acetylintermedine N-oxide. These chemicals facilitate diverse biological activities, acting as ACE-inhibitors, ABeta-inhibitors, and AP-1-inhibitors, though caution is noted regarding its hepatotoxic nature. Ultimately, these properties make it a powerful resource for managing inflammation, aches, and abscesses through its analgesic effects.
- Synonyms
- Not available
- Common names
- Not available
- Family
- Boraginaceae
- Distribution
- Northern America
- Plant Parts
- Root · Leaf
Classification
Common Names
Symphytum officinale is a versatile plant widely recognized by its most prevalent English name, Common Comfrey. Depending on the region and local dialect, this species may also be referred to as Confrei. In certain botanical circles, you might encounter it listed under the synonym Consolda. Furthermore, it is sometimes known by the specific designation Consolida maggiore. Understanding these various common names is essential for correctly identifying this well-known herb in the field.
Sources: Catalogue of Life (COL)
Taxonomy
Symphytum officinale belongs to the vast kingdom Plantae, representing the fundamental biological classification of all green plants. Within this kingdom, the species is categorized under the class Equisetopsida, a group that includes many diverse flowering plants. It further resides in the order Boraginales, which helps scientists understand its evolutionary lineage. This plant is a distinguished member of the family Boraginaceae, sharing key structural characteristics with its relatives. Finally, it is placed within the genus Symphytum, a classification that defines its unique botanical identity.
| Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Boraginales |
| Family | Boraginaceae |
| Genus | Symphytum |
Sources: The World Checklist of Vascular Plants (WCVP)
Distribution
Geographic Regions
Symphytum officinale maintains a broad and diverse distribution throughout the Asia-Temperate region. This plant can be found spanning the rugged landscapes of the Caucasus and the North Caucasus. Its presence extends deep into Central Asia, specifically within the territories of Kazakhstan. Within China, the species thrives across varied environments, ranging from the North-Central and Southeast regions to the Manchuria area. This widespread geographic range highlights the remarkable adaptability of the species across different Asian climates.
Sources: The World Checklist of Vascular Plants (WCVP)
Identification
Morphology
Symphytum officinale is a self-supporting herb that displays a versatile growth habit in various environments. This plant typically reaches a maximum height of 1.5 meters, allowing it to stand prominently in a garden or meadow. Depending on the specific growing conditions, its stature can vary significantly throughout its life cycle. While it can grow as small as 0.3 meters, it frequently establishes a more substantial presence. Many specimens commonly settle at a height of approximately 0.5835 meters as they mature.
Sources: Global Inventory of Floras and Traits (GIFT)
Biological Activities
Symphytum officinale is a plant that exhibits a complex range of pharmacological activities, including a notable antimitotic effect on human T lymphocytes in vitro. While its components show potential in cellular studies, the plant is also recognized as being hepatotoxic to the liver. This toxicity is often linked to the presence of pyrrolizidine alkaloids, which are widespread heterocyclic organic compounds. Research utilizing invertebrate models has confirmed that extracts of the plant are toxic in a concentration-dependent manner. Consequently, these multifaceted effects underscore the importance of careful risk assessment when considering its medicinal use.
Compounds
Symphytum officinale, commonly known as comfrey, is a medicinal plant characterized by a complex profile of bioactive chemical constituents. It contains beneficial compounds such as flavonoids, which are often studied for their varying yields under different extraction methods. However, the plant's therapeutic use is complicated by the presence of toxic pyrrolizidine alkaloids. Specifically, it contains hazardous substances including lasiocarpine and symphytine, which can lead to serious hepatic issues in humans. Furthermore, the plant contains 7-acetylintermedine N-oxide, a specific alkaloid component that highlights the critical importance of thorough safety assessments in medicinal extracts.
Conditions
Symphytum officinale serves as a medicinal plant that treats inflammation and provides analgesic relief for muscle and joint complaints. It also protects the skin against ultraviolet (UV)-irradiation, making it useful for topical applications. Research indicates that the plant's extracts exhibit significant antioxidant capacity through the treatment of ABTS. Furthermore, the plant demonstrates neuroprotective potential by acting to treat AChE.
Preparations
Symphytum officinale is prepared as a root extract to investigate its anti-inflammatory properties through the inhibition of NF-κB signaling. This plant is also processed into various Symphytum products, such as ointments, which are used to study the skin penetration of pyrrolizidine alkaloids. Researchers utilize both aqueous extracts and alcoholic extracts, including methanol and ethanol preparations, to assess the stability of flavonoids and allantoin under ultraviolet light. Additionally, the plant can be processed into an alkaloid extract to evaluate potential clastogenic effects and chromosome damage in human lymphocyte cultures. These diverse preparation methods allow for a comprehensive scientific analysis of the medicinal and toxicological profiles of the species.
Parts used
Symphytum officinale, commonly known as comfrey, is a medicinal plant that possesses several distinct anatomical parts used in various studies. Researchers have focused extensively on the root, where unique bidesmosidic triterpenoidal saponins and pyrrolizidine alkaloids are found. The plant's leaf is also a subject of significant interest, particularly regarding the height of its epidermal cells and the structure of its mesophyll. Additionally, the stem serves as a key component for histological investigation to understand how the species adapts to different ecological habitats. By examining the root, leaf, and stem, scientists can better assess the phytochemical and structural characteristics of this important Boraginaceae species.