Eucalyptus

Research corpus coverage

Chemistry notes

• CHEMISTRY: Relevant reported constituents include 1,8-cineole; alpha-pinene; constituent presence alone does not establish clinical efficacy.

Traditional / historical use

Documented traditional use — not a claim of established efficacy.

• TRADITIONAL: Eucalyptus has been used for cough; congestion; topical pain; this records historical/traditional use and does not establish efficacy.

  MODERATE · regulatory monograph · WHO Monographs on Selected Medicinal Plants

Modern evidence

• EVIDENCE: For the major use set (cough; congestion; topical pain), the evidence assessment is limited/mixed: Traditional-use support and limited evidence for cineole in respiratory symptoms.

  MODERATE · regulatory monograph and mixed scientific literature · WHO Monographs on Selected Medicinal Plants

  Mixed findings, product heterogeneity, or indirect evidence are preserved in the detailed profile.

Forms used traditionally

A listed form does not imply it suits every plant part, or that one preparation is interchangeable with another — see the plant’s own notes below.

Cats

• High risk

  The page title characterizes eucalyptus as toxic to cats; the body provides no cat-specific preparation, route, concentration, or clinical-sign details beyond that characterization.

  Intrinsic toxicity · UNKNOWN · Eucalyptus, unspecified preparation · HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

• High risk

  Eucalyptus oil is known to cause poisoning in cats and may produce neurologic, respiratory, cardiovascular, thermoregulatory, gastrointestinal, and hepatic signs.

  Intrinsic toxicity · OTHER · eucalyptus essential oil · HIGH · poison_control_database · Essential Oils and Cats

Dogs

• Caution

  Eucalyptus is listed as Eucalyptus species under “Plants Toxic to Dogs.” The page does not provide oil-specific evidence, toxic constituents, clinical signs, or cat-specific evidence.

  Intrinsic toxicity · UNKNOWN · Not stated; plant-group listing only · HIGH · poison_control_database · Toxic and Non-Toxic Plant List — Dogs - ASPCA

Cats & dogs

• High risk

  Eucalyptus oil is listed among essential oils associated with products that can be toxic in dogs and/or cats; the page does not provide oil-specific species, route, dose, or sign attribution.

  Intrinsic toxicity · OTHER · Essential oil, including as a component of herbal flea or tick treatments · MODERATE · veterinary_manual · essential, herbal, oil poisoning canine feline - Consultant

• High risk

  ASPCA lists Eucalyptus species (family Myrtaceae) as toxic to cats and dogs; the toxic constituent is the essential oil eucalyptol.

  Intrinsic toxicity · OTHER · Unspecified; no preparation or concentration distinction is provided. · HIGH · poison_control_database · Toxic and Non-toxic Plants: Eucalyptus

• High risk

  Eucalyptus essential oil is identified as an oil that can cause seizures in companion animals.

  Intrinsic toxicity · OTHER · eucalyptus essential oil · HIGH · veterinary_manual · Toxicosis por aceites esenciales en animales - Toxicología

• High risk

  Ornamental-houseplant Eucalyptus species have been implicated in deaths of dogs and cats; the page does not specify the Eucalyptus species, plant part, preparation beyond ornamental houseplant exposure, or a quantitative threshold.

  Intrinsic toxicity · OTHER · Ornamental houseplant · MODERATE · veterinary_manual · Cyanide Poisoning - Special Pet Topics - Merck Veterinary Manual

• High risk

  Eucalyptus oil is listed among essential oils that can cause seizures in animals.

  Intrinsic toxicity · INHALATION · eucalyptus essential oil · HIGH · veterinary_manual · Toxicoses From Essential Oils in Animals - Toxicology

• High risk

  Oral or dermal exposure to highly concentrated eucalyptus essential oil can cause severe neurologic abnormalities and, rarely, kidney impairment in pet animals.

  Intrinsic toxicity · OTHER · Highly concentrated eucalyptus essential oil · HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

• High risk

  Eucalyptus oil is listed as an essential oil known to cause poisoning in dogs and cats after oral or dermal exposure.

  Intrinsic toxicity · OTHER · essential oil · HIGH · poison_control_database · Updates on Essential Oils

• High risk

  Eucalyptus essential oil is listed among common essential oils that can cause poisoning in animals.

  Intrinsic toxicity · OTHER · essential oil · HIGH · poison_control_database · Essential Oils | Pet Poison Helpline®

• Caution

  Animals may be exposed to eucalyptol through ingestion of herbal products containing essential oils; the page gives no separate clinical signs for these products.

  Intrinsic toxicity · ORAL · Herbal products containing essential oils · HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

• Caution

  Low-concentration eucalyptus oil is associated with minor nausea in pet animals.

  Intrinsic toxicity · OTHER · Low-concentration eucalyptus oil · HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

• Caution

  Small oral ingestions of a few eucalyptus leaves are associated with minor nausea in pet animals; the page does not provide separate cat- or dog-specific findings.

  Intrinsic toxicity · ORAL · Eucalyptus leaves; small ingestion · HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

Additional safety notes (general, unstructured)

Free-text safety notes carried from their source — not broken out by species, route, or hazard type, and not equivalent to the structured records above. Each note names the kind of source it came from.

• SAFETY: Major issues include Oil ingestion can cause seizures, coma and death; airway irritation. Contraindications/cautions include Infants/young children; seizure disorders.

  HIGH · regulatory monograph · EMA European Union herbal monographs and list entries

• SAFETY: Clinically relevant interaction concerns include CYP interactions possible; additive effects with sedatives uncertain.

  MODERATE · regulatory monograph · EMA European Union herbal monographs and list entries

  Some interactions are theoretical or based on case reports/pharmacokinetics rather than outcome trials.

• SAFETY: Pregnancy/lactation reference: Avoid internal essential-oil use in pregnancy/lactation.

  MODERATE · regulatory monograph or evidence synthesis · WHO Monographs on Selected Medicinal Plants

  Absence of evidence is not evidence of safety.

• Eucalyptus oil is listed among essential oils associated with products that can be toxic in dogs and/or cats; the page does not provide oil-specific species, route, dose, or sign attribution.

  MODERATE · veterinary_manual · essential, herbal, oil poisoning canine feline - Consultant

  The page names eucalyptus oil but does not attribute the listed signs specifically to it or distinguish cats from dogs.

• ASPCA lists Eucalyptus species (family Myrtaceae) as toxic to cats and dogs; the toxic constituent is the essential oil eucalyptol.

  HIGH · poison_control_database · Toxic and Non-toxic Plants: Eucalyptus

  The page does not identify a specific organ system or eucalyptus-specific exposure route.

• Eucalyptus essential oil is identified as an oil that can cause seizures in companion animals.

  HIGH · veterinary_manual · Toxicosis por aceites esenciales en animales - Toxicología

  The page names eucalyptus oil but does not identify a specific eucalyptus species or toxic constituent.

• Ornamental-houseplant Eucalyptus species have been implicated in deaths of dogs and cats; the page does not specify the Eucalyptus species, plant part, preparation beyond ornamental houseplant exposure, or a quantitative threshold.

  MODERATE · veterinary_manual · Cyanide Poisoning - Special Pet Topics - Merck Veterinary Manual

  The page discusses cyanogenic glycoside-containing plants and states that Eucalyptus species have been implicated in deaths, but it does not explicitly identify cyanogenic glycosides as a constituent specifically of Eucalyptus or provide Eucalyptus-specific clinical signs.

• Eucalyptus oil is listed among essential oils that can cause seizures in animals.

  HIGH · veterinary_manual · Toxicoses From Essential Oils in Animals - Toxicology

• Animals may be exposed to eucalyptol through ingestion of herbal products containing essential oils; the page gives no separate clinical signs for these products.

  HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

  The page does not identify the specific herbal products or distinguish cats from dogs.

• Low-concentration eucalyptus oil is associated with minor nausea in pet animals.

  HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

  The page does not specify whether exposure was oral, dermal, or inhalational, and does not distinguish cats from dogs.

• Oral or dermal exposure to highly concentrated eucalyptus essential oil can cause severe neurologic abnormalities and, rarely, kidney impairment in pet animals.

  HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

  The page does not provide separate cat- or dog-specific findings or exact concentration values.

• Small oral ingestions of a few eucalyptus leaves are associated with minor nausea in pet animals; the page does not provide separate cat- or dog-specific findings.

  HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

  The page uses general pet-animal language and does not distinguish cats from dogs.

• Eucalyptus oil is listed as an essential oil known to cause poisoning in dogs and cats after oral or dermal exposure.

  HIGH · poison_control_database · Updates on Essential Oils

  The page does not name a eucalyptus-oil toxic constituent.

• Eucalyptus essential oil is listed among common essential oils that can cause poisoning in animals.

  HIGH · poison_control_database · Essential Oils | Pet Poison Helpline®

  No eucalyptus-specific toxic constituent, dose, route-specific profile, or sign profile is provided.

• The page title characterizes eucalyptus as toxic to cats; the body provides no cat-specific preparation, route, concentration, or clinical-sign details beyond that characterization.

  HIGH · poison_control_database · Eucalyptus Is Toxic To Cats | Pet Poison Helpline®

  The title is cat-specific, but the body does not provide separate cat-specific findings.

• Eucalyptus oil is known to cause poisoning in cats and may produce neurologic, respiratory, cardiovascular, thermoregulatory, gastrointestinal, and hepatic signs.

  HIGH · poison_control_database · Essential Oils and Cats

  The page names eucalyptus oil but does not identify its toxic constituent or distinguish route.

• Eucalyptus is listed as Eucalyptus species under “Plants Toxic to Dogs.” The page does not provide oil-specific evidence, toxic constituents, clinical signs, or cat-specific evidence.

  HIGH · poison_control_database · Toxic and Non-Toxic Plant List — Dogs - ASPCA

  The entry is not limited to Eucalyptus globulus and does not distinguish whole plant from essential oil.

Taxonomic identity note

• Eucalyptus is treated here as Eucalyptus globulus Labill. in the family Myrtaceae; recorded older names include Eucalyptus gigantea Dehnh..