Goat's rue Toxic?

Updated 2026-03-06| 5 min read| 2,317 found this helpful
Galega officinalis L.
1

All plant parts are toxic, with highest toxin concentrations during flowering and fruiting; toxins remain active even after drying.

2

Sheep ingestion causes severe respiratory distress, convulsions, and potential rapid death from asphyxia 18-24 hours post-exposure.

3

It is easily confused with highly toxic crown vetch (Securigera varia), increasing accidental ingestion risk for grazing livestock.

FAQ

Is Goat's rue toxic to Humans?

No confirmed toxicity or symptom data available for humans (Moderate)

Is Goat's rue toxic to Cats?

No confirmed toxicity or symptom data available for cats (Moderate)

Is Goat's rue toxic to Dogs?

No confirmed toxicity or symptom data available for dogs (Moderate)

Is Goat's rue toxic to Horses?

No confirmed toxicity or symptom data available for horses (Moderate)

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Toxicity Details

Humans
Moderate

No confirmed toxicity or symptom data available for humans

Cats
Moderate

No confirmed toxicity or symptom data available for cats

Dogs
Moderate

No confirmed toxicity or symptom data available for dogs

Horses
Moderate

No confirmed toxicity or symptom data available for horses

Toxicity Snapshot

Toxic PartsAll parts of the plant, with highest toxin content during flowering and fruiting stages
Exposure RoutePrimarily ingestion; no confirmed dermal or inhalation toxicity reported
Toxic CompoundsGalegin; Hydroxigalegin (guanidine derivatives); Galuteolin (flavone glycoside); Saponins; Bitter compounds; Small amounts of tannins; Unidentified additional suspected toxins

First Aid & Prevention

First 30 Minutes

  • • If ingestion is witnessed, prevent further consumption and remove all plant material from the exposed individual's mouth
  • • Collect a full sample of the ingested plant for accurate identification to guide treatment
  • • Do not induce vomiting unless explicitly directed by a medical or veterinary professional

Contact Vet Immediately

  • • Ingestion of any quantity of the plant is suspected in livestock, pets, or humans
  • • Symptoms including difficulty breathing, coughing, foaming at the mouth/nose, or muscle spasms appear after potential exposure
  • • Unusual neurological symptoms (convulsions, abnormal posturing) develop after possible plant ingestion

Prevention

  • • Avoid planting Goat's rue in areas accessible to livestock, pets, or young children
  • • Learn to identify Goat's rue and its highly toxic lookalike crown vetch to prevent accidental exposure
  • • Remove wild growing Goat's rue from pastures used for sheep grazing

Treatment & Prognosis

  • • Decontamination procedures including activated charcoal administration and gastric lavage as clinically appropriate
  • • Symptomatic supportive care including respiratory support, anti-convulsant medication, and cardiac monitoring
  • • Ongoing clinical observation for 24-48 hours post-exposure to catch delayed symptom onset
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Professional Toxicology

Scientific NameGalega officinalis L.
AliasesFrench honeysuckle、French lilac、True goat's rue、Common goat's rue、Goat clover、Goat herb、Spotted herb、Buckhorn herb、Pox herb、Goat's rue (French)、Spanish sainfoin、Capraggine
Toxicity Grade
HumansModerate
CatsModerate
DogsModerate
HorsesModerate
Target Organs
Respiratory systemCardiovascular systemNervous systemSkeletal musculature
Mechanism of Action

• Guanidine derivatives (galegin and hydroxigalegin) are the primary toxic agents, interfering with respiratory and neuromuscular function

• Unidentified additional toxins likely contribute to severe, potentially fatal clinical effects in susceptible species

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Sheep: Rare poisoning cases are documented. Symptoms appear 18-24 hours after ingestion, including severe dyspnea, painful coughing, foaming at the mouth and nose, pounding heartbeats, muscle spasms, opisthotonus, convulsions, and potentially rapid death from asphyxia. Most other animal species naturally avoid consuming this plant.
Confusion Risk

The following plants look similar and may be confused:

Crown vetch Securigera varia (syn. Coronilla varia)
Visually similar in growth form and legume flower structure; Goat's rue bears pale lilac or white individual pea-like flowers, while crown vetch has dense clusters of pink to purple flowers. Crown vetch is significantly more toxic than Goat's rue.
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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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