Hagbrier Toxic?

Updated 2026-03-06| 4 min read| 4,348 found this helpful
Smilax hispida
1

Per ASPCA data, Smilax hispida is confirmed non-toxic to cats, dogs, and horses with no identified toxic compounds.

2

No adverse health effects are expected from incidental ingestion or skin contact with this plant.

3

Consult a medical provider or veterinarian only if unusual symptoms appear post-exposure to rule out other causes.

FAQ

Is Hagbrier toxic to Humans?

No expected toxic symptoms; rare mild gastrointestinal upset may occur in sensitive individuals after ingestion of very large quantities. (Non-toxic)

Is Hagbrier toxic to Cats?

No expected toxic symptoms; mild transient digestive discomfort may occur in rare cases of excessive consumption. (Non-toxic)

Is Hagbrier toxic to Dogs?

No expected toxic symptoms; mild temporary gastrointestinal upset may occur with ingestion of extremely large volumes of plant material. (Non-toxic)

Is Hagbrier toxic to Horses?

No expected toxic symptoms; minor digestive irritation is possible only if very large quantities are consumed. (Non-toxic)

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Toxicity Details

Humans
Non-toxic

No expected toxic symptoms; rare mild gastrointestinal upset may occur in sensitive individuals after ingestion of very large quantities.

Cats
Non-toxic

No expected toxic symptoms; mild transient digestive discomfort may occur in rare cases of excessive consumption.

Dogs
Non-toxic

No expected toxic symptoms; mild temporary gastrointestinal upset may occur with ingestion of extremely large volumes of plant material.

Horses
Non-toxic

No expected toxic symptoms; minor digestive irritation is possible only if very large quantities are consumed.

Toxicity Snapshot

Toxic PartsNo confirmed toxic parts identified
Exposure RouteIngestion, dermal contact
Toxic CompoundsNo confirmed toxic principles identified per ASPCA assessments

First Aid & Prevention

First 30 Minutes

  • • Rinse mouth with clean water if large quantities of the plant are ingested
  • • Wash exposed skin with mild soap and water if local irritation occurs
  • • Monitor for unusual signs of discomfort for 1 to 2 hours post-exposure

Contact Vet Immediately

  • • Persistent vomiting, diarrhea, or lethargy occurs after ingestion
  • • Signs of allergic reaction (hives, swelling, difficulty breathing) appear
  • • Unusual symptoms do not resolve on their own within 24 hours

Prevention

  • • Identify all plants in your home and yard to avoid confusion with toxic lookalike species
  • • Keep wild plant cuttings out of reach of young children and pets to prevent incidental overconsumption
  • • Supervise pets and small children when exploring areas with dense wild vine growth

Treatment & Prognosis

  • • Supportive care (fluid administration, rest) for mild gastrointestinal symptoms if they occur
  • • Antihistamines may be administered for rare allergic reactions per medical or veterinary guidance
  • • No specific antidote is required, as no toxic compounds are present in the plant
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Professional Toxicology

Scientific NameSmilax hispida
AliasesHellfetter
Toxicity Grade
HumansNon-toxic
CatsNon-toxic
DogsNon-toxic
HorsesNon-toxic
Target Organs
No target organs for toxicity identified
Mechanism of Action

• No toxic mechanism identified, as the plant contains no confirmed harmful principles for humans or common domestic animals

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: No reported toxic effects; incidental ingestion of small quantities is not expected to cause harm
Sheep: No confirmed toxicity linked to consumption of this plant species
Small companion mammals (rabbits, guinea pigs): No expected toxic effects, though ingestion of large volumes may cause mild, temporary digestive upset
Confusion Risk

The following plants look similar and may be confused:

Common Greenbrier Smilax rotundifolia
Similar woody climbing vine structure and thorny stems; key difference: Smilax rotundifolia has rounder, thicker leaves compared to the thinner, elongated leaves of Smilax hispida.
Catbrier Smilax glauca
Similar growth habit and small dark berries; key difference: Smilax glauca has a distinct waxy, pale silver underside to its leaves, which is absent in Smilax hispida.
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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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