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Is Lance-leaved Water Plantain toxic to dogs?

Alisma lanceolatum

Mildly toxic to dogs

Mildly. The ASPCA lists lance-leaved water plantain as mildly toxic to dogs — a chewing dog typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. This classification follows the ASPCA Toxic and Non-Toxic Plant List. Alisma lanceolatum is not individually listed by the ASPCA. Alisma species (Alismataceae) contain saponins and an acrid, irritant juice when fresh that can cause gastrointestinal irritation if ingested in quantity by pets or livestock. The irritant compounds are destroyed by drying or cooking. Treat as mildly toxic and prevent pets from ingesting plant material. No severe or life-threatening toxicity is documented.

What to do if your dog ate lance-leaved water plantain

  1. Remove any plant material from your dog's mouth and move lance-leaved water plantain out of reach.
  2. Note how much was eaten and when, and watch for drooling, vomiting, or lethargy.
  3. Do not induce vomiting unless a vet or poison-control specialist instructs you to.
  4. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice.
  5. Bring a leaf or photo of lance-leaved water plantain to the appointment so it can be treated correctly.

General guidance, not veterinary advice. If you think your dog has eaten lance-leaved water plantain, contact your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 — do not wait for symptoms to worsen.

Is lance-leaved water plantain toxic to dogs? — FAQ

Is lance-leaved water plantain toxic to dogs?

Mildly. The ASPCA lists lance-leaved water plantain as mildly toxic to dogs — a chewing dog typically gets mouth irritation, drooling, and vomiting rather than a medical emergency, but it is still best kept out of reach. Alisma lanceolatum is not individually listed by the ASPCA. Alisma species (Alismataceae) contain saponins and an acrid, irritant juice when fresh that can cause gastrointestinal irritation if ingested in quantity by pets or livestock. The irritant compounds are destroyed by drying or cooking. Treat as mildly toxic and prevent pets from ingesting plant material. No severe or life-threatening toxicity is documented.

What are the symptoms if a dog eats lance-leaved water plantain?

Alisma lanceolatum is not individually listed by the ASPCA. Alisma species (Alismataceae) contain saponins and an acrid, irritant juice when fresh that can cause gastrointestinal irritation if ingested in quantity by pets or livestock. The irritant compounds are destroyed by drying or cooking. Treat as mildly toxic and prevent pets from ingesting plant material. No severe or life-threatening toxicity is documented. Signs usually appear soon after chewing rather than hours later — watch for drooling, pawing at the mouth, vomiting, loss of appetite, or unusual lethargy after your dog has had access to lance-leaved water plantain.

What should I do if my dog ate lance-leaved water plantain?

Stay calm. Remove any plant from your dog's mouth and take the plant away. Note how much was eaten and when, and do not induce vomiting unless told to. Call your vet or the ASPCA Animal Poison Control Center on (888) 426-4435 and follow their advice; a leaf or photo helps the vet treat it correctly.

Is lance-leaved water plantain toxic to cats too?

The ASPCA classification Growli uses applies to both cats and dogs: Lance-leaved Water Plantain is mildly toxic to cats as well. See the full lance-leaved water plantain pet-safety guide for both species.

What is a dog-safe alternative to lance-leaved water plantain?

For a similar look without the risk, see the best dogs-safe plants list — every plant there is ASPCA non-toxic to cats and dogs.

Full lance-leaved water plantain pet-safety