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Lemongrass Poisoning in Cats: Signs and What to Do

PawAI Lab
5 min read

Understand how lemongrass poisoning affects cats, what signs to watch for, and what steps to take if you suspect your cat has been exposed.

Quick Answer

Lemongrass poisoning in cats may cause gastrointestinal and other effects that warrant veterinary evaluation. While the plant itself is less dangerous than concentrated essential oils, cats lack the liver enzyme to metabolize these compounds. Concentrated oils should never be used on or around cats. If you suspect poisoning, contact a veterinarian or animal poison-control service for guidance.

Before using any tool, contact a veterinary professional if your cat may have been exposed.

  • 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

TOXICITY CHECKER

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Safety Verdict

Use Caution. Culinary herbs contain essential oils that can be toxic to cats in concentrated forms. The fresh or dried plant contains much lower concentrations but can still cause GI upset in sensitive cats.

While the plant itself is less dangerous than concentrated essential oils, cats lack the liver enzyme to metabolize these compounds. Concentrated oils should never be used on or around cats.

What Is Lemongrass?

Lemongrass contains essential oils that can be toxic to cats in concentrated forms. The fresh plant may cause mild gastrointestinal upset if chewed.

How Lemongrass Poisoning Affects Cats

The toxic principle in lemongrass is essential oils and volatile compounds in low concentrations. Culinary herbs contain essential oils that can be toxic to cats in concentrated forms. The fresh or dried plant contains much lower concentrations but can still cause GI upset in sensitive cats.

The severity of lemongrass poisoning in cats depends on several factors:

  • The amount consumed or the extent of exposure
  • The route of exposure (ingestion, skin contact, inhalation)
  • The cat's body weight, age, and overall health
  • Whether the substance was in concentrated or diluted form
  • How quickly veterinary treatment is initiated

Usually mild from plant material. Concentrated essential oils are far more dangerous.

Signs of Lemongrass Poisoning in Cats

Common signs include:

  • Vomiting
  • Diarrhea
  • Drooling
  • Lethargy
  • Loss of appetite
  • Mild disorientation rare

Timeline: Signs typically develop within a few hours.

Emergency signs requiring immediate veterinary attention:

  • Persistent vomiting
  • Tremors or seizures more likely with concentrated oils
  • Severe lethargy
  • Difficulty breathing

The absence of signs does not necessarily rule out risk, particularly with substances that have delayed effects. Veterinary evaluation is recommended even if your cat appears normal after known exposure.

What to Do If You Suspect Poisoning

  1. Contact a veterinarian or animal poison-control service for guidance.
  2. Remove any remaining substance from your cat's reach.
  3. Offer fresh water if your cat is willing to drink.
  4. Monitor for signs and contact a veterinarian if they develop or worsen.

Have this information ready:

  • Your cat's age, weight, breed, and any medical conditions
  • The specific product or plant name and its ingredients if known
  • Estimated amount consumed and time of exposure
  • Current symptoms and when they started
  • Product packaging, plant photos, or remaining material

If only a small amount of leaf was chewed with no signs, monitoring may be appropriate. Any exposure to concentrated essential oils should be treated as an emergency.

When to Contact a Veterinarian

Contact a veterinarian or animal poison-control service immediately if you suspect lemongrass poisoning. While the plant itself is less dangerous than concentrated essential oils, cats lack the liver enzyme to metabolize these compounds.

Emergency signs that require urgent veterinary attention:

  • Persistent vomiting
  • Tremors or seizures more likely with concentrated oils
  • Severe lethargy
  • Difficulty breathing

Non-urgent follow-up: If only a small amount of leaf was chewed with no signs, monitoring may be appropriate. Any exposure to concentrated essential oils should be treated as an emergency.

FAQ

Are culinary herbs like rosemary and thyme safe for cats?

The plants are generally less dangerous than concentrated essential oils but can still cause GI upset. Cats lack the liver enzyme to metabolize these compounds.

Is it safe to diffuse essential oils around cats?

Diffusers can expose cats to toxic compounds. Cats lack glucuronyl transferase, the liver enzyme needed to metabolize many essential oil compounds. Consult a veterinarian before use.

What if my cat chewed on my herb garden?

Remove the plant and monitor for vomiting, drooling, or lethargy. Contact a veterinarian if signs develop.

TOXICITY CHECKER

Concerned about another plant, food, medication, or household item around your cat? Get general, species-aware safety information to help you decide your next step.

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This tool provides general safety information and does not replace veterinary advice.

Sources

Disclaimer

This article and the PawAI Toxicity Checker tool provide general safety information and do not replace examination, diagnosis, or treatment by a licensed veterinarian. If your cat may have ingested a toxic substance, contact a veterinarian, emergency clinic, or animal poison control immediately.