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Autumn crocus (Colchicum autumnale)
meadow saffron, Colchicum
A professional reference for veterinary specialists. It does not replace clinical judgement.
Species and toxic dose
| Species | Risk | Toxic dose |
|---|---|---|
| Dog | Toxic | Not established in the open sources |
| Cat | Especially sensitive | Not established in the open sources |
Toxic principle
Colchicine and related alkaloids; all parts are toxic, the bulb the most. Extremely toxic even in small amounts.
Onset
Not stated by the sources.
Clinical signs
Bloody vomiting, diarrhoea, shock, damage to several organs (heart, liver, kidneys), bleeding, bone marrow suppression.
Organs affected
Digestive tract, bone marrow, several organs.
Treatment principle (for veterinarians)
Prompt decontamination and intensive supportive care; the open sources give no dog- or cat-specific treatment.
A summary of the principles in the sources, not a protocol: doses and the plan are the treating veterinarian's decision.
Notes
Described as a particular threat to cats (NC State).
Sources
Professional reference for veterinary professionals. Not advertising and not a substitute for the product label/SPC.
For veterinary professionals only. It does not replace clinical judgement or the product label; check the dose in the official label (SPC). vetman is not liable for harm caused by using this information.
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This reference is still growing. Missing a product? Let us know. · Report an error or request an addition · Updated: 22 Oct 2026