Western swordfern Toxic?

Western swordfern has confirmed low toxicity, driven by acylphloroglucinol class compounds present in all plant parts
Ingestion of any amount of the plant will likely cause mild gastrointestinal distress including vomiting and diarrhea
Treatment for ingestion relies on decontamination and targeted symptomatic care with no specific antidote required
FAQ
Is Western swordfern toxic to Humans?
Vomiting, diarrhea, mild abdominal pain (Low)
Is Western swordfern toxic to Cats?
No species-specific data available; suspected to cause mild gastrointestinal irritation (vomiting, diarrhea) if ingested (Low)
Is Western swordfern toxic to Dogs?
No species-specific data available; suspected to cause mild gastrointestinal irritation (vomiting, diarrhea) if ingested (Low)
Is Western swordfern toxic to Horses?
No species-specific data available; suspected to cause mild gastrointestinal irritation (diarrhea, reduced appetite) if ingested (Low)
Toxicity Details
Vomiting, diarrhea, mild abdominal pain
No species-specific data available; suspected to cause mild gastrointestinal irritation (vomiting, diarrhea) if ingested
No species-specific data available; suspected to cause mild gastrointestinal irritation (vomiting, diarrhea) if ingested
No species-specific data available; suspected to cause mild gastrointestinal irritation (diarrhea, reduced appetite) if ingested
Toxicity Snapshot
First Aid & Prevention
First 30 Minutes
- • Rinse mouth thoroughly with clean water to remove residual plant material
- • Avoid inducing vomiting unless explicitly directed by a medical or veterinary professional
- • Collect a sample of the ingested plant for formal identification to guide care
Contact Vet Immediately
- • Persistent vomiting or diarrhea lasting more than 2 hours post-ingestion
- • Signs of abdominal pain, lethargy, or dehydration develop after exposure
- • Large quantities of the plant were ingested by a small child, small pet, or foal
Prevention
- • Keep plants out of reach of young children, pets, and grazing livestock
- • Confirm plant identification prior to planting in accessible yards or pastures
- • Educate household members on the mild toxicity risk of this fern species
Treatment & Prognosis
- • Administer gastrointestinal decontamination (e.g. activated charcoal) for recent ingestions
- • Provide symptomatic care including anti-emetics, fluid therapy, and electrolyte replacement as needed
- • Monitor patients for 24 to 48 hours post-ingestion to detect secondary complications
Professional Toxicology
• Acylphloroglucinol compounds irritate the gastrointestinal mucosa, triggering inflammatory responses that lead to digestive symptoms
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.