Senna alexandrina
What's the taxonomical classification of Senna alexandrina?
Senna alexandrina belongs to the kingdom Plantae and is classified under the phylum Streptophyta. Within the class Equisetopsida and the subclass Magnoliidae, it is placed in the order Fabales. As a member of the family Fabaceae, this plant is further categorized into the genus Senna, with its specific designation being the species alexandrina.
| Taxonomic Rank | Classification |
|---|---|
| Kingdom | Plantae |
| Phylum | Streptophyta |
| Class | Equisetopsida |
| Subclass | Magnoliidae |
| Order | Fabales |
| Family | Fabaceae |
| Genus | Senna |
| Species | alexandrina |
What are the morphological characteristics of this plant?
Senna alexandrina has an erect, perennial shrubby habit characterized by woody stems that typically reach heights of 1 to 2 meters. The leaves are pinnately compound, consisting of several pairs of oblong or elliptical leaflets with entire margins and obtuse apices. Small, bright yellow flowers emerge in clusters from the leaf axils, featuring five petals and numerous prominent stamens. The fruit develops into elongated, cylindrical or slightly curved woody pods that contain numerous small, brownish seeds. These botanical features distinguish it from other species within the Fabaceae family.
What is the geographical distribution of this plant?
This plant is native to the arid and semi-arid regions of North Africa, the Middle East, and parts of the Indian subcontinent. It is most frequently documented growing in the sandy soils of Egypt, Sudan, and Saudi Arabia. The species also extends its range into parts of the Mediterranean basin and various dry tropical zones. Because it thrives in hot, desert-like environments, it is widely distributed across the Sahelian belt. Its ability to withstand intense heat allows it to occupy specific ecological niches where other vegetation struggles to survive.
How is this plant cultivated?
This plant grows best in tropical or subtropical climates with well-drained sandy loam soil and requires full sunlight to produce high yields of medicinal leaves.
Farmers typically sow the seeds during the spring or early summer to take advantage of the warm growing season. Regular irrigation is essential to maintain consistent moisture, although the crops must be protected from waterlogged conditions to prevent root rot. During the development phase, careful weeding and pest management help ensure the health of the foliage.
Once the plants reach maturity, the leaves are harvested manually or mechanically to be dried for pharmaceutical use.
What parts of this plant are used medicinally?
This plant medicinal uses primarily involve the folium and the pod of Senna alexandrina. The dried leaf, known as the folium, contains active sennosides that act as a stimulant laxative. These leaves are often processed into powders or teas for treating constipation. Additionally, the pod is sometimes utilized in traditional preparations for its specific therapeutic properties. Both the leaf and the pod serve as essential components in various herbal remedies.
According to a study published by "Yakugaku zasshi : Journal of the Pharmaceutical Society of Japan", commercial powdered natural products for medicinal use containing Sennae Folium were examined. Electron spin resonance spectral measurements found a considerable amount of stable free radicals, approximately 10(17)-10(18) spin/g, contained within these products. The study also demonstrated that the vibratory milling of such powders in a metallic vessel enhanced the ESR spectral intensities. This process shows the occurrence of mechanoradical formation in the plant material.
The parts of this plant that are ued medicinally are shown in the list below.
- folium
- leaf
- leaves
- pod
- pods
What traditional systems uses this plant?
This plant, Senna alexandrina, has been utilized for centuries as a potent stimulant laxative within various traditional medical systems, most notably in Ayurvedic practices of Indian traditional medicine. In these ancient Indian systems, the plant was frequently employed to treat constipation and to assist in the cleansing of the digestive tract. Beyond its gastrointestinal uses, historical practitioners also applied the plant to address skin conditions and to manage metabolic imbalances. Its chemical properties, specifically the presence of sennosides, provided a reliable method for inducing bowel movements in historical pharmacopoeias. This long history of medicinal application established the plant as a foundational component in many regional healing traditions.
According to a study published by "Frontiers in plant science", Senna alexandrina Mill. is an important medicinal plant of the family Fabaceae. The leaves and pods of Senna alexandrina yield sennosides and rhein-based laxative. Adulteration of Senna alexandrina is a serious issue as with most of the medicinal plants used in the Indian systems of traditional medicine. In this study, genomic DNA extracted from 44 accessions of Indian senna was subjected to SCoT and CBDP PCR. The developed markers were validated across 48 samples, which included the 44 accessions of Indian senna and 4 adulterant species.
The hystorical systems that uses this plant are shown in the list below.
- Indian systems of traditional medicine
What are the pharmacological activities of Senna alexandrina?
This plant has cathartic and laxative pharmacological activities, anti-inflammatory properties, antioxidant capabilities, and the ability to facilitate the normalization of gastrointestinal transit time. The presence of sennosides within its leaves triggers peristaltic movements in the colon to stimulate bowel function. By regulating these movements, it effectively aids in the normalization of gastrointestinal transit time for individuals suffering from constipation. Beyond its digestive effects, the plant exhibits anti-inflammatory actions that help mitigate irritation within the bodily tissues. Furthermore, its antioxidant properties provide protection against oxidative stress by neutralizing harmful free radicals.
According to a study published by "Shokuhin eiseigaku zasshi. Journal of the Food Hygienic Society of Japan", sennosides A and B were detected in 21 commercial health tea products surveyed between 2000 and 2007. Although 8 products contained leaves that could not be identified due to discoloration, component analysis confirmed they were senna leaves. Sennosides in medicinal doses were detected in some processed senna samples. These sennosides were determined to have a cathartic action in mice. The presence of these components in senna leaves may lead to health risks, including diarrhea.
The primary pharmacological activities of this plant are shown in the list below.
- laxative
- cathartic
- normalization of the gastrointestinal transit time
- anti-inflammatory
- antioxidant
What medicinal compounds this plant contains?
This plant contains the medicinal anthraquinones known as sennosides, which specifically include sennoside A and sennoside B. These bioactive compounds act as stimulant laxatives by irritating the colon to promote bowel movements. In addition to these primary sennosides, the plant also possesses various rhein derivatives. These chemical constituents are responsible for the plant's significant pharmacological effects on the digestive system. Together, these diverse compounds make Senna alexandrina a potent source of natural laxative agents.
According to a study published by "Frontiers in plant science", Indian senna (Senna alexandrina Mill.) is an important medicinal plant of the family Fabaceae. The leaves and pods of Indian senna yield sennosides and rhein-based laxative. The study involved genomic DNA extracted from 44 accessions of Indian senna. Researchers developed one SCoT-44- and two CBDP-25-based SCARs to identify the plant. The SCoT-44 SCAR produced a signature amplicon of 287 bp for accession DCA120. Additionally, the CBDP-25 SCAR yielded signature amplicon of 575 bp for accession DCA13 and 345 bp for accession DCA119.
The primary medicinal compounds of this plant are shown in the list below.
- sennosides
- sennoiide A
- sennoiide B
- anthraquinones
- rhein derivatives
What health conditions is this plant used for?
This plant is used for treating constipation, chronic constipation, and various other digestive diseases. It is highly valued in traditional medicine due to its powerful laxative action. The senna alexandrina plant contains specific compounds that provide potent laxative properties to stimulate bowel movements. These natural elements help regulate the intestines and alleviate discomfort associated with long-term digestive issues. By addressing these specific conditions, the plant serves as a common remedy for improving gastrointestinal health.
According to a study published by "Toxicon : official journal of the International Society on Toxinology", Senna alexandrina is a medicinal herb commonly used as a laxative and a dietary aid for weight loss. Repeated consumption of this plant may lead to persistent diarrhea. Literature also reports cases of acute liver failure and hepato-encephalopathic syndrome following chronic ingestion. In a specific case involving 2 siblings in their 30s, the regular consumption of Senna was linked to 2 simultaneous fatalities occurring within 2 days of each other. Analytical documentation confirmed the presence of Senna related substances, specifically rheinanthrone and aloe-emodine, in urine, bile, and feces.
The main health conditions this plant is used for are shown in the list below.
- constipation
- chronic constipation
- laxative action
- laxative properties
- digestive diseases
What are the herbal preparations of this plant?
This plant is Senna alexandrina, a source of medicinal preparations including the standardized pharmaceutical product Agiolax, the purified compound Sennatin, alcoholic leaf extract, decoction, and dry herbs. These various forms are primarily utilized for their potent stimulant laxative properties to treat constipation. Manufacturers often produce the alcoholic leaf extract to concentrate the active anthraquinone glycosides found within the foliage. Patients may also consume a decoction made by boiling the plant material or ingest the crushed dry herbs directly. Each specific preparation offers a different method for delivering the plant's therapeutic effects to the digestive system.
According to a study published by "Acta bio-medica de L'Ateneo parmense : organo della Societa di medicina e scienze naturali di Parma", a new preparation made from senna pods was studied for its efficacy and tolerability. The study involved 100 patients of both sexes, aged from 40 to 60 years, which included 30 with diabetes mellitus, 40 with obesity, and 30 with hyperlipidemia. These patients were treated for 3 months with a daily dose of 2 teaspoons every evening. Results showed that 88% of the patients presented a normalization of the gastrointestinal transit time, while only 12% did not respond satisfactorily to the substance. Furthermore, the drug was well tolerated by 86% of the patients.
The main herbal preparations of this plant are shown in the list below.
- AGIOLAX
- Sennatin
- alcoholic leaf extract
- decoction
- dry herbs
What side effects this plant can have?
This plant can cause a range of health side effects including diarrhea, constipation, gastrointestinal disorders, hepatotoxicity, and skin eruption. Overuse or excessive consumption frequently leads to severe diarrhea and various other gastrointestinal disorders such as abdominal cramping. If usage is inconsistent or improper, users may experience rebound constipation. Although rare, some individuals may suffer from hepatotoxicity, which indicates potential liver damage. Additionally, certain people might develop a skin eruption as an allergic reaction to the plant's compounds.
According to a study published by "Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials", senna was used to induce a diarrhea model in NIH mice. The study examined the pharmacological effects of FuKean Tablet on this senna induced diarrhea model. The research found that the tablet cured the diarrhea induced by senna and prominently reduced the quantity of feces. Furthermore, the tablet delayed the time of excreting charcoal powder in the senna induced diarrhea model in NIH mice. The treatment also inhibited intestinal propelling-movement in the NIH mice that were in the senna induced diarrhea model.
The main side effects this plant can have are shown in the list below.
- diarrhea
- constipation
- gastrointestinal disorders
- hepatotoxicity
- skin eruption
What herbs are paired with Senna alexandrina?
This plant is most commonly paired with peppermint, ginger, or fennel to mitigate its potent laxative effects and reduce abdominal cramping.
Combining sennoside-rich leaves with ginger helps to soothe the digestive tract while stimulating peristalsis. Peppermint is frequently added to the infusion to alleviate the gas and bloating that can occur during bowel movements. Fennel seeds are another popular addition because they provide an antispasmodic effect that balances the plant's intensity.
These herbal combinations are specifically designed to improve the overall tolerability of the stimulant laxative.