Toxic to cats · Plants

Is Larkspur toxic to cats?

High severity No safe amount — No amount is considered safe.

Yes, Larkspur is highly toxic to cats. Exposure can cause serious illness and needs prompt veterinary attention. No amount is considered safe.

Symptoms to watch for

  • Vomiting
  • Diarrhea
  • Weakness
  • Drooling
  • Abnormal heart rhythms
  • Constipation
  • Abdominal pain
  • Paralysis
  • Tremors
  • Seizures

How vets treat it

Immediate veterinary intervention is required for stabilization and supportive care; no specific antidote is mentioned.

Why it's dangerous

The diterpene alkaloids inhibit acetylcholine, creating a neuromuscular blocking effect that can lead to heart and lung failure.

Toxic compound: Diterpene alkaloids

Good to know

While grazing animals like cattle are most at risk for death, the plant is toxic to all species in the Ranunculaceae family.

Sources

This page is informational and is not veterinary advice. If your pet has been exposed to something risky, contact your vet or an animal poison control line right away.

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