Tinnevelly senna Toxic?

Updated 2026-03-06| 2 min read| 1,286 found this helpful
Senna alexandrina Mill. (syn. Cassia angustifolia Vahl)
1

All plant parts are toxic, with the highest concentration of toxins found in the seeds

2

Toxicity is primarily driven by anthracene derivatives including multiple sennoside compounds

3

Ingestion causes severe systemic symptoms in livestock, and may harm companion animals if consumed

FAQ

Is Tinnevelly senna toxic to Humans?

Limited toxicity data available; large quantity ingestion may cause diarrhea, muscle weakness and electrolyte imbalance (Low)

Is Tinnevelly senna toxic to Cats?

No feline-specific toxicity data reported; monitor for digestive upset, lethargy and weakness if ingested (Low)

Is Tinnevelly senna toxic to Dogs?

No canine-specific toxicity data reported; monitor for diarrhea, ataxia and muscle weakness if ingested (Low)

Is Tinnevelly senna toxic to Horses?

Weight loss, muscle weakness, ataxia, diarrhea, recumbency, myoglobinuria, heart and skeletal muscle degeneration (Moderate)

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Toxicity Details

Humans
Low

Limited toxicity data available; large quantity ingestion may cause diarrhea, muscle weakness and electrolyte imbalance

Cats
Low

No feline-specific toxicity data reported; monitor for digestive upset, lethargy and weakness if ingested

Dogs
Low

No canine-specific toxicity data reported; monitor for diarrhea, ataxia and muscle weakness if ingested

Horses
Moderate

Weight loss, muscle weakness, ataxia, diarrhea, recumbency, myoglobinuria, heart and skeletal muscle degeneration

Toxicity Snapshot

Toxic PartsEntire plant, especially the seeds
Exposure RoutePrimary exposure route is ingestion of leaves, seeds, fruits or other plant material
Toxic CompoundsSennoside A; Sennoside A1; Sennoside B; Sennidin; Sennoside C; Sennoside D; Sennoside D1; Sennoside E; Sennoside F; 6-Hydroxymusizin glucoside; Tinnevellinglucoside; Cassiaphenonglucoside; Cassiaxanthon

First Aid & Prevention

First 30 Minutes

  • • Induce vomiting if ingestion occurred within 2 hours and the affected individual is conscious
  • • Administer activated charcoal to bind unabsorbed toxins in the gastrointestinal tract
  • • Move affected animals to a quiet, safe area to prevent injury from ataxia or weakness

Contact Vet Immediately

  • • If ingestion of any part of the plant is confirmed or suspected
  • • If symptoms including diarrhea, weakness, ataxia or disorientation appear after exposure
  • • If dark red/brown urine (myoglobinuria) is observed

Prevention

  • • Remove all Tinnevelly senna plants from areas accessible to pets, livestock and children
  • • Learn to identify this plant and its toxic lookalikes to avoid accidental exposure
  • • Do not feed unconfirmed plant material to livestock or companion animals

Treatment & Prognosis

  • • Perform gastrointestinal decontamination as clinically appropriate
  • • Provide symptomatic supportive care including fluid therapy and electrolyte correction
  • • Monitor cardiac and muscular function for signs of degenerative damage
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Professional Toxicology

Scientific NameSenna alexandrina Mill. (syn. Cassia angustifolia Vahl)
AliasesIndian senna、Alexandrian senna、Séné de l'Inde、Tinnevelly-Senna (German)
Toxicity Grade
HumansLow
CatsLow
DogsLow
HorsesModerate
Target Organs
Gastrointestinal tractSkeletal muscleCardiac muscleKidneys
Mechanism of Action

• Anthracene derivatives (sennosides) irritate the gastrointestinal tract, causing diarrhea and electrolyte loss

• Toxins induce degenerative damage to skeletal and cardiac muscle tissue

• Myoglobin released from damaged muscle tissue causes kidney damage and myoglobinuria

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: Ingestion causes weight loss, muscle weakness, diarrhea and muscle degeneration
Goats: Exposure leads to digestive upset, ataxia and potential cardiac damage
Sheep: Ingestion can cause diarrhea, recumbency and myoglobinuria
Pigs: Toxic exposure results in muscle weakness, weight loss and systemic organ damage
Rabbits: Ingestion causes digestive distress, muscle degeneration and weakness
Chickens: Exposure leads to adverse systemic effects including weight loss and weakness
Confusion Risk

The following plants look similar and may be confused:

Other Cassia species Cassia spp.
Morphologically similar to Tinnevelly senna; most Cassia species are also toxic, carrying comparable health risks if ingested
Golden chain Laburnum anagyroides
Similar leaf shape and growth form to Tinnevelly senna; golden chain is highly toxic, containing dangerous cytisine alkaloids
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Data Sources

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.

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