Can Dogs Eat Licorice? The Toxicity Risk Every Dog Owner Needs to Know

Is Licorice Safe for Dogs?

No — licorice is not safe for dogs. Real black licorice, made with licorice root extract (Glycyrrhiza glabra), contains a compound called glycyrrhizin that is toxic to dogs. Licorice should not be given to dogs intentionally, and accidental ingestion should be taken seriously.

This applies to:

• Black licorice candy
• Licorice extract and licorice root supplements
• Licorice-flavored herbal teas and products
• Traditional European licorice (which often has higher glycyrrhizin content than American licorice candy)
• Some herbal remedies and supplements that list licorice root as an ingredient

What Makes Black Licorice Dangerous for Dogs

The active toxic component in licorice is glycyrrhizin — a naturally occurring compound found in the licorice plant root. Glycyrrhizin has potent effects on hormone regulation, specifically mimicking aldosterone, a hormone that controls sodium and potassium balance in the body.

In dogs, glycyrrhizin causes a condition called pseudohyperaldosteronism, which leads to:

• Sodium retention (the body holds on to too much salt)
• Potassium loss (critical electrolyte drops dangerously low)
• Elevated blood pressure
• Fluid retention and swelling
• Muscle weakness from low potassium (hypokalemia)
• In severe cases: heart arrhythmias and kidney strain

Dogs are more vulnerable to these effects than humans because their bodies metabolize glycyrrhizin differently and at lower thresholds for toxicity relative to body weight.

What About Red Licorice?

Most red licorice sold in the US (including Twizzlers and similar products) does not actually contain licorice root extract. The flavor comes from artificial strawberry or cherry flavoring. This means red licorice does not carry the same glycyrrhizin-based toxicity risk as black licorice.

However, red licorice is still not a safe treat for dogs. It contains:

• High amounts of sugar (can cause stomach upset, obesity, dental issues)
• Artificial colors and flavors (gastrointestinal irritants)
• Corn syrup (empty calories with digestive effects)

Bottom line: red licorice is not licorice-toxic, but it is still unhealthy for dogs and should be kept away from them.

How Much Licorice Is Dangerous for a Dog?

There is no established safe dose of licorice for dogs. Toxicity depends on:

• The amount consumed relative to body weight
• The glycyrrhizin concentration of the specific product (traditional European licorice often contains much more than American candy)
• Whether exposure was a one-time event or repeated
• Your dog's individual health status

Small dogs face greater risk from smaller amounts. A single small piece of licorice candy is unlikely to cause severe toxicity in a large dog, but a small dog who eats several pieces, or any dog who consumes licorice extract or concentrated products, is at meaningful risk.

Symptoms of Licorice Toxicity in Dogs

Signs to watch for after your dog eats licorice:

• Vomiting or diarrhea
• Lethargy or unusual tiredness
• Muscle weakness (difficulty standing, trembling)
• Increased thirst and urination
• Abdominal bloating
• Rapid or irregular heartbeat

Symptoms of electrolyte imbalance (low potassium, high sodium) may not appear immediately — they can develop over hours. Do not wait for symptoms to worsen before contacting a vet.

What to Do If Your Dog Ate Licorice

1. Do not induce vomiting without veterinary direction — sometimes it makes things worse
2. Identify what your dog ate: Keep the packaging and note how much was consumed
3. Call your vet or ASPCA Animal Poison Control (888-426-4435): They will guide you based on what your dog ate, the amount, and your dog's size
4. Watch for symptoms and get to an emergency vet if your dog is vomiting repeatedly, appears weak, or seems distressed

Safe Alternatives to Licorice for Dogs

If your dog has developed a taste for sweet treats, there are far safer options:

• Blueberries (antioxidants, low sugar)
• Watermelon (seedless, no rind)
• Apple slices (no seeds or core)
• Carrots (great for dental health)
• Commercial dog treats formulated for safety

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