PlantFunSweet Pea Toxic?
Seeds are the most toxic part of the sweet pea plant, holding the highest concentration of harmful active compounds.
Long-term ingestion causes severe neurological, respiratory and muscular symptoms in horses and cattle, with potential fatal outcomes.
Birds are at extremely high risk of severe toxic reaction even after small amounts of sweet pea ingestion.
FAQ
Is Sweet Pea toxic to Humans?
No confirmed human toxicity data is available in reference datasets; ingestion of any plant part is not recommended. (Low)
Is Sweet Pea toxic to Cats?
No species-specific feline toxicity data has been documented; monitor for unusual lethargy, vomiting or pain if ingestion occurs. (Low)
Is Sweet Pea toxic to Dogs?
No species-specific canine toxicity data has been documented; monitor for unusual lethargy, vomiting or pain if ingestion occurs. (Low)
Is Sweet Pea toxic to Horses?
Onset after several weeks of consistent ingestion: excitability, skittishness, progressive weakness, colic, unsteady gait, hindlimb paralysis, dyspnea after mild exertion, laryngeal stridor, difficulty swallowing, sweating, seizures, weak/arrhythmic pulse, nosebleeds, lip rashes, mane/withers hair loss, possible death from suffocation after months of exposure. (Severe)
Toxicity Details
No confirmed human toxicity data is available in reference datasets; ingestion of any plant part is not recommended.
No species-specific feline toxicity data has been documented; monitor for unusual lethargy, vomiting or pain if ingestion occurs.
No species-specific canine toxicity data has been documented; monitor for unusual lethargy, vomiting or pain if ingestion occurs.
Onset after several weeks of consistent ingestion: excitability, skittishness, progressive weakness, colic, unsteady gait, hindlimb paralysis, dyspnea after mild exertion, laryngeal stridor, difficulty swallowing, sweating, seizures, weak/arrhythmic pulse, nosebleeds, lip rashes, mane/withers hair loss, possible death from suffocation after months of exposure.
Toxicity Snapshot
First Aid & Prevention
First 30 Minutes
- • Remove all remaining sweet pea plant material from the exposed animal's environment immediately.
- • Collect a sample of the ingested plant for accurate identification by veterinary staff.
- • Induce vomiting or administer activated charcoal only if explicitly directed by a veterinarian, within 2 hours of ingestion.
Contact Vet Immediately
- • Any confirmed or suspected ingestion of sweet pea plant parts by horses, cattle, birds or grazing livestock.
- • Observation of neurological symptoms (unsteady gait, paralysis, seizures), respiratory distress or colic after exposure.
- • Pets showing persistent unusual symptoms (vomiting, lethargy, pain) after suspected ingestion.
Prevention
- • Do not plant sweet pea in pastures, grazing areas or enclosures accessible to horses, livestock or pet birds.
- • Remove all wild or cultivated sweet pea plants from areas where pets, horses or foraging animals may access them.
- • Never feed sweet pea seeds or any part of the plant as forage to any livestock species.
Treatment & Prognosis
- • Initiate gastrointestinal decontamination (gastric lavage, activated charcoal administration) as clinically appropriate.
- • Provide targeted symptomatic supportive care (anti-seizure medication, pain management, respiratory support) for observed symptoms.
- • Perform emergency tracheotomy if severe laryngeal obstruction occurs in affected horses, per veterinary guidance.
Professional Toxicology
• Toxic amino acid derivatives and nitrile compounds cause progressive neurodegenerative damage, and disrupt connective tissue and collagen synthesis with repeated exposure.
Information from CliniTox veterinary text.
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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.