PlantFunMale fern Toxic?
Highest toxin concentrations are present in rhizomes, leaf stalks, and young plants harvested in summer.
High doses have a 30-minute latency period before symptom onset, with risk of fatal paralysis in severe cases.
Thiaminase content induces vitamin B1 deficiency, requiring high-dose thiamine supplementation for treatment.
FAQ
Is Male fern toxic to Humans?
Limited human-specific data is available; high ingestion is expected to cause stomach inflammation, agitation, paralysis, and potential death. (Moderate)
Is Male fern toxic to Cats?
No species-specific toxicity data reported; suspected to cause gastrointestinal distress, uncoordinated movement, and weakness. (Low)
Is Male fern toxic to Dogs?
No species-specific toxicity data reported; suspected to cause gastrointestinal distress, uncoordinated movement, and weakness. (Low)
Is Male fern toxic to Horses?
No species-specific toxicity data reported; suspected to cause gastrointestinal distress, uncoordinated movement, rumen suppression, and weakness. (Low)
Toxicity Details
Limited human-specific data is available; high ingestion is expected to cause stomach inflammation, agitation, paralysis, and potential death.
No species-specific toxicity data reported; suspected to cause gastrointestinal distress, uncoordinated movement, and weakness.
No species-specific toxicity data reported; suspected to cause gastrointestinal distress, uncoordinated movement, and weakness.
No species-specific toxicity data reported; suspected to cause gastrointestinal distress, uncoordinated movement, rumen suppression, and weakness.
Toxicity Snapshot
First Aid & Prevention
First 30 Minutes
- • Induce vomiting if ingestion occurred within 2 hours and the affected individual is conscious and alert.
- • Administer activated charcoal to bind unabsorbed toxins in the gastrointestinal tract.
- • Monitor closely for early signs of drooling, agitation, vomiting, or unsteady gait.
Contact Vet Immediately
- • Any confirmed or suspected ingestion of male fern plant material by pets or livestock.
- • Onset of symptoms including bloody diarrhea, vision changes, progressive weakness, or difficulty moving.
- • Development of seizures, paralysis, or loss of consciousness after exposure.
Prevention
- • Remove male fern plants from areas accessible to pets, livestock, and young children.
- • Only consume wild foraged ferns if confirmed safe by a trained plant identification expert.
- • Avoid feeding unvetted wild plant or forage material to companion animals or livestock.
Treatment & Prognosis
- • Perform gastrointestinal decontamination as clinically appropriate for the exposure timeline.
- • Administer high-dose vitamin B1 (thiamine) supplementation to counteract thiaminase-induced deficiency.
- • Provide magnesium sulfate and supportive care including fluid therapy, pain management, and targeted care for neurological or organ damage.
Professional Toxicology
• Thiaminase enzyme breaks down endogenous thiamine (vitamin B1), leading to acute thiamine deficiency and associated neurological damage.
• Acylphloroglucinol compounds cause direct gastrointestinal irritation, disrupt cellular function, and damage organ tissues including the liver and kidneys.
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.