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Is Bloodroot Toxic to Dogs? Sanguinaria Risks and What to Do

PawAI Lab
7 min read

Learn whether bloodroot poses a risk to dogs, what compounds are responsible, and the steps a veterinarian may recommend after exposure.

Quick Answer

Bloodroot (Sanguinaria canadensis) can be harmful to dogs. The plant contains alkaloids, including sanguinarine, that can irritate the digestive system and, at higher exposures, affect the nervous system. Signs may include drooling, vomiting, diarrhea, and lethargy. If your dog ate any part of a bloodroot plant, contact a veterinarian or animal poison-control service for guidance, even if no signs have appeared yet.

Before using any tool, contact a veterinary professional if your dog may have eaten bloodroot.

  • US: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • UK: Animal PoisonLine (01202 509000) or your nearest veterinary emergency clinic
  • Canada: ASPCA Animal Poison Control (888-426-4435) or Pet Poison Helpline (855-764-7661)
  • AU: Animal Emergency Centre or your regular vet
  • EU: Contact your nearest veterinary emergency service

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Safety Verdict

Potentially Harmful. Bloodroot (Sanguinaria canadensis) is a North American wildflower that contains several alkaloids, the best-known being sanguinarine. These compounds can irritate the digestive system and, at higher exposures, affect the nervous system. All parts of the plant are considered potentially harmful, with the root (rhizome) generally containing the highest concentration of alkaloids.

Bloodroot gets its name from the reddish-orange sap found in its root, which has historically been used in traditional and topical preparations. The plant is sometimes found in woodland gardens and wildflower beds. Because the alkaloids can produce meaningful signs when ingested, bloodroot should be treated as potentially harmful to dogs. ASPCA lists Sanguinaria canadensis as toxic to dogs, cats, and horses.

What Should the Owner Do Now?

  1. Contact a veterinarian or animal poison-control service. They can help assess the likely risk based on the amount and your dog's size.
  2. Do not induce vomiting unless a veterinarian or poison-control professional directly instructs you to do so.
  3. Remove any remaining plant material from your dog's reach and rinse the mouth with water if plant pieces are visible. Bloodroot sap can also irritate the skin and mouth, so rinsing promptly may help reduce local irritation.
  4. Collect relevant information (see the section below) so the veterinary team can assess the situation accurately.
  5. Do not give food, milk, salt, charcoal, or any home remedy. These are not proven treatments for bloodroot alkaloid exposure and may worsen the situation.

Even if your dog ate only a small amount and seems fine, professional consultation is still recommended because signs can develop over several hours.

What Signs May Occur?

The alkaloids in bloodroot, including sanguinarine, can irritate the digestive system and, at higher exposures, affect the nervous system. Signs may begin within a few hours of ingestion, though the timeline can vary.

Gastrointestinal signs may include:

  • Drooling or excessive salivation
  • Vomiting
  • Diarrhea
  • Reduced appetite
  • Abdominal discomfort

Other possible signs may include:

  • Lethargy or unusual tiredness
  • Weakness
  • Tremors, in larger ingestions

Because the root contains the highest concentration of alkaloids, dogs that dig up and chew the rhizome may be at greater risk of more significant signs. The absence of early symptoms does not necessarily rule out risk, because effects can develop over several hours.

What Information Should Be Ready?

When you contact a veterinarian or poison-control service, having the following details available can help them assess the situation more efficiently:

  • Dog's details: species, breed, approximate age, and body weight
  • Plant identity: bloodroot (Sanguinaria canadensis) if known; a photo of the plant can help
  • Part eaten: leaves, stems, flowers, or root (rhizome)
  • Estimated amount: best guess of how much plant material was consumed
  • Time of ingestion: when the exposure occurred, or the window during which it may have happened
  • Current symptoms: any drooling, vomiting, diarrhea, lethargy, or tremors
  • Medical history: current medications and pre-existing health conditions

Provide honest estimates rather than precise numbers. The veterinary team can work with approximate information to determine the best course of action.

Differences That May Affect Risk

Bloodroot toxicity risk in dogs is influenced by several factors, none of which allow for a reliable prediction of outcome:

  • Plant part: The root (rhizome) generally contains the highest concentration of alkaloids, though all parts of the plant are considered potentially harmful.
  • Amount ingested: Larger ingestions, particularly of the root, are more likely to produce significant signs, while small nibbles of foliage may cause only mild gastrointestinal upset.
  • Body size: Smaller dogs may be at greater risk from a given amount of plant material, though risk applies across sizes.
  • Individual sensitivity: Reactions can vary between individual dogs, and the irritant nature of the sap can add local mouth and skin effects.

Because of these uncertainties, any known or suspected ingestion should be discussed with a veterinarian.

When to Contact a Veterinarian

Contact a veterinarian or animal poison-control service if your dog has eaten any part of a bloodroot plant. Seek help promptly rather than waiting for symptoms to appear.

Emergency signs that require urgent veterinary attention include:

  • Persistent vomiting or diarrhea
  • Tremors or seizures
  • Collapse or profound weakness
  • Refusal to eat or drink

Non-urgent follow-up: If the ingestion occurred hours or days ago and your dog appears normal, a veterinary consultation is still recommended to confirm whether monitoring or examination is needed.

FAQ

Is bloodroot dangerous to dogs?

Bloodroot can be harmful to dogs. It contains alkaloids, including sanguinarine, that can irritate the digestive system and affect the nervous system at higher exposures. The plant is listed as toxic by ASPCA, so any ingestion should be discussed with a veterinarian.

Which part of bloodroot is most toxic?

The root, or rhizome, generally contains the highest concentration of alkaloids, including sanguinarine. All parts of the plant are considered potentially harmful, but dogs that dig up and chew the root may be at greater risk of more significant signs.

What should I do if my dog ate bloodroot?

Contact a veterinarian or animal poison-control service for guidance. Do not induce vomiting unless directed by a professional, remove any remaining plant material, and rinse the mouth if plant sap or pieces are visible. Have details about the amount, part eaten, and time of ingestion ready. Even if your dog seems fine, professional advice is recommended because signs can develop over several hours.

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Disclaimer

This article and the PawAI Toxicity Checker provide general safety information and cannot determine an individual pet's toxicity risk or replace a veterinarian or animal poison-control service. If exposure may have occurred, contact an appropriate professional promptly, even if your pet appears well.

Written by PawAI Lab