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Is Star of Bethlehem Toxic to Dogs? Signs and What to Do

PawAI Lab
7 min read

Learn whether Star of Bethlehem poses a serious risk to dogs, how its cardiac glycosides can affect the heart and digestive system, and the steps a veterinarian may recommend after exposure.

Quick Answer

Yes, Star of Bethlehem (Ornithogalum species) is toxic to dogs. The plant contains cardiac glycosides, compounds that can affect heart function and cause gastrointestinal upset. The bulb is the most toxic part, though all portions of the plant carry risk. If your dog has eaten any part of a Star of Bethlehem plant, contact a veterinarian or animal poison-control service right away, even if your dog appears well at this time.

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

  • 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

Toxic. Star of Bethlehem plants in the Ornithogalum genus contain cardiac glycosides, a class of compounds that directly affect the heart. Cardiac glycosides work by inhibiting the sodium-potassium pump in heart muscle cells, which alters the balance of electrolytes and can disrupt the electrical signaling that controls heart rate and rhythm. This is the same general mechanism by which foxglove (Digitalis) affects the heart.

All parts of the Star of Bethlehem plant contain cardiac glycosides, but the bulb holds the highest concentration and presents the greatest risk. Dogs that dig up and consume bulbs are at significantly greater risk than those that nibble on above-ground leaves or flowers. However, because cardiac glycosides are present throughout the plant, any ingestion should be taken seriously. The compounds are not destroyed by drying, meaning that plant material in hay, mulch, or compost may also pose a risk.

What Should the Owner Do Now?

  1. Contact a veterinarian or animal poison-control service immediately. Because cardiac glycosides can affect heart function, time is important. Do not wait for signs to appear.
  2. Do not induce vomiting unless a veterinarian or poison-control professional directly instructs you to do so. If cardiac compounds are involved, the physical stress of vomiting may pose additional risk.
  3. Identify which part of the plant was eaten. Bulb ingestion carries the greatest risk and warrants the most urgent veterinary attention.
  4. Collect a sample of the plant for identification by the veterinary team if you are uncertain whether it is Star of Bethlehem.
  5. Do not give food, milk, salt, charcoal, or any home remedy. These are not proven treatments and may interfere with veterinary care.
  6. Remove the plant from your dog's environment to prevent further ingestion.

What Signs May Occur?

Signs of Star of Bethlehem ingestion in dogs may develop within 2 to 6 hours of exposure, though cardiac effects may take longer to become apparent.

Gastrointestinal signs often appear first:

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

Cardiac signs may develop as cardiac glycosides are absorbed and affect heart function:

  • Changes in heart rate (elevated, slowed, or irregular)
  • Weakness or reluctance to move
  • Lethargy or unusual drowsiness
  • Pale or discolored gums
  • Collapse in severe cases

Absence of signs shortly after ingestion does not necessarily rule out risk. Cardiac glycosides can have a delayed effect as they accumulate in the body, and heart rhythm changes may not be immediately obvious without veterinary monitoring. This is why professional evaluation is important even when a dog appears well.

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:

  • Dog's details: species, breed, approximate age, and body weight
  • Plant part consumed: bulb, leaves, stems, or flowers, and whether the plant has been confirmed as Star of Bethlehem
  • Estimated amount: best guess of how much plant material was ingested
  • Time of exposure: when the ingestion occurred or the window during which it may have happened
  • Current symptoms: any vomiting, diarrhea, lethargy, weakness, or changes in heart rate or breathing
  • Medical history: any pre-existing heart conditions, current medications (especially cardiac medications or diuretics), and other health concerns

Differences That May Affect Risk

Several factors may influence the severity of Star of Bethlehem toxicity in dogs:

  • Plant part: The bulb contains the highest concentration of cardiac glycosides and presents the greatest risk. Leaves and flowers contain lower levels but are not safe.
  • Amount consumed: Larger ingestions, particularly of bulbs, are more likely to produce significant cardiac effects.
  • Body size: Smaller dogs may experience more pronounced effects from a given amount of plant material.
  • Individual sensitivity: Some dogs may be more sensitive to cardiac glycosides than others, and the toxic threshold can vary between individuals.
  • Existing conditions: Dogs with pre-existing heart disease, electrolyte imbalances, or kidney disease may be more vulnerable to the effects of cardiac glycosides. Dogs taking certain medications, particularly other cardiac drugs or diuretics, may face additional risk due to cumulative effects. Disclose all current medications to the veterinary team.

When to Contact a Veterinarian

Contact a veterinarian or animal poison-control service immediately if your dog has eaten any part of a Star of Bethlehem plant. Do not wait for symptoms to appear, as cardiac effects can develop without obvious early warning signs.

Emergency signs that require urgent veterinary attention include:

  • Persistent or repeated vomiting
  • Irregular, rapid, or unusually slow heart rate
  • Weakness, lethargy, or collapse
  • Pale or discolored gums
  • Difficulty breathing
  • Seizures

Non-urgent follow-up: Because Star of Bethlehem contains cardiac glycosides, there is no truly low-risk ingestion. Even if only a small amount of above-ground plant material was consumed and your dog appears well, veterinary evaluation and cardiac monitoring are recommended. Blood work and an electrocardiogram may be advised to assess for subtle cardiac effects.

FAQ

Are Star of Bethlehem bulbs toxic to dogs?

Yes, Star of Bethlehem bulbs contain the highest concentration of cardiac glycosides and are the most dangerous part of the plant. Dogs that dig up and eat bulbs are at significantly greater risk than those that nibble on leaves or flowers. Bulb ingestion should always be treated as a veterinary emergency.

How do cardiac glycosides affect dogs?

Cardiac glycosides inhibit the sodium-potassium pump in heart muscle cells, which disrupts the normal electrolyte balance and can alter the electrical signaling that controls heart rate and rhythm. In dogs, this can lead to arrhythmias, changes in heart rate, weakness, and in severe cases, collapse. The effects may not be immediately obvious without veterinary monitoring.

Can dogs recover from Star of Bethlehem poisoning?

Recovery is possible with prompt veterinary care, particularly when treatment begins before significant cardiac signs develop. Treatment may include decontamination if appropriate, intravenous fluids, medications to manage heart rhythm, and close cardiac monitoring. The outcome depends on the amount ingested, the part of the plant consumed, and how quickly veterinary care is initiated. A veterinarian can provide a prognosis based on the specific situation.

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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.