Laurustinus Toxic?

Updated 2026-03-06| 2 min read| 3,785 found this helpful
Laurustinus
1

Primary toxic parts are unripe fruits, bark and leaves; ripe berry toxicity ranges from non-toxic to mildly toxic per conflicting reports.

2

Ingestion commonly causes increased salivation, vomiting and diarrhea in both humans and animals.

3

Leaf hairs of closely related Viburnum rhytidophyllum may trigger urticaria-like skin reactions on contact.

FAQ

Is Laurustinus toxic to Humans?

Increased salivation, vomiting, diarrhea; contact with leaf hairs of related Viburnum species may cause urticaria-like rashes (Moderate)

Is Laurustinus toxic to Cats?

No species-specific data available, expected to cause gastrointestinal irritation (excessive salivation, vomiting, diarrhea) if toxic parts are ingested (Moderate)

Is Laurustinus toxic to Dogs?

No species-specific data available, expected to cause gastrointestinal irritation (excessive salivation, vomiting, diarrhea) if toxic parts are ingested (Moderate)

Is Laurustinus toxic to Horses?

No species-specific data available, expected to cause gastrointestinal irritation (excessive salivation, diarrhea, abdominal discomfort) if toxic parts are ingested (Moderate)

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Toxicity Details

Humans
Moderate

Increased salivation, vomiting, diarrhea; contact with leaf hairs of related Viburnum species may cause urticaria-like rashes

Cats
Moderate

No species-specific data available, expected to cause gastrointestinal irritation (excessive salivation, vomiting, diarrhea) if toxic parts are ingested

Dogs
Moderate

No species-specific data available, expected to cause gastrointestinal irritation (excessive salivation, vomiting, diarrhea) if toxic parts are ingested

Horses
Moderate

No species-specific data available, expected to cause gastrointestinal irritation (excessive salivation, diarrhea, abdominal discomfort) if toxic parts are ingested

Toxicity Snapshot

Toxic PartsUnripe fruits, bark, leaves; ripe berry toxicity is unconfirmed, with reports ranging from non-toxic to mildly toxic
Exposure RouteIngestion of toxic plant parts; skin contact with leaf hairs of related Viburnum species may cause irritation
Toxic CompoundsArbutin (hydroquinone glycoside); Viburtinal (iridoid); α-Amyrin; β-Amyrin (triterpenes, present in bark); Apigenin; Luteolin (flavones); Quercetin; Rutin; Amentoflavon (flavonoids); Saponins; Tannins

First Aid & Prevention

First 30 Minutes

  • • Rinse mouth thoroughly with clean water to remove remaining plant material and reduce irritation
  • • Induce vomiting only if explicitly directed by a medical professional or veterinarian
  • • Wash affected skin with mild soap and cool water immediately if rash develops after contact
  • • Remove any remaining plant pieces from the mouth of children or pets to prevent further ingestion

Contact Vet Immediately

  • • Ingestion of large quantities of bark, leaves or unripe fruits by pets
  • • Persistent vomiting, diarrhea, lethargy or signs of distress post-ingestion
  • • Development of skin swelling, difficulty breathing or severe rashes after exposure

Prevention

  • • Keep young children and unsupervised pets away from Laurustinus plants, especially during fruiting season
  • • Never consume unripe fruits, bark or leaves of Viburnum tinus plants
  • • Wear gloves when pruning related Viburnum species to avoid contact with irritant leaf hairs

Treatment & Prognosis

  • • Decontamination (e.g. activated charcoal administration) as directed by a healthcare provider or veterinarian
  • • Symptomatic care including fluid therapy for dehydration from vomiting/diarrhea, and anti-emetics to control vomiting
  • • Anti-histamines may be prescribed for urticaria-like skin reactions following contact exposure
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Professional Toxicology

Scientific NameViburnum tinus L.
AliasesLaurestine、Laurustinus viburnum、Lorbeerschneeball、Viorne tin、Viburno tino
Toxicity Grade
HumansModerate
CatsModerate
DogsModerate
HorsesModerate
Target Organs
Gastrointestinal tractSkin (for contact reactions with related Viburnum species)
Mechanism of Action

• Irritant saponins and tannins trigger gastrointestinal mucosa irritation, leading to salivation, vomiting and diarrhea

• Arbutin breaks down to hydroquinone in the digestive tract, contributing to cellular irritation and toxic effects

• Viburtinal and triterpene compounds amplify the irritant effect of ingested plant material

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Livestock (cattle, sheep, goats): Expected to cause gastrointestinal irritation including salivation, diarrhea and abdominal discomfort if large quantities of toxic plant parts are ingested
Small companion mammals (rabbits, guinea pigs): Low risk of mild gastrointestinal upset if small amounts are ingested; larger quantities may cause dehydration and severe digestive distress
Confusion Risk

The following plants look similar and may be confused:

Leatherleaf viburnum Viburnum rhytidophyllum
Belongs to the same Viburnum genus with similar shrub growth habit and clustered fruits; key difference is its rough, hairy leaves that can trigger urticaria on contact, unlike smooth Viburnum tinus leaves
Wayfaring tree Viburnum lantana
Similar deciduous shrub growth habit and clustered berry fruits; key difference is its coarsely toothed, fuzzy leaves, compared to the smooth, evergreen leaves of Viburnum tinus
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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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