American Bittersweet Toxic?

Updated 2026-03-06| 2 min read| 3,899 found this helpful

Celastrus scandens

False Bittersweet is confirmed toxic to cats, dogs, and horses per ASPCA toxicity data

Its primary toxic active compounds are classified as sesquiterpene alkaloids

Common clinical signs of ingestion in vulnerable animals include vomiting and diarrhea

FAQ

Is American Bittersweet toxic to Humans?

No confirmed cases of human toxicity have been formally reported, though intentional ingestion is not advised (Non-toxic)

Is American Bittersweet toxic to Cats?

Vomiting, diarrhea, mild gastrointestinal discomfort (Moderate)

Is American Bittersweet toxic to Dogs?

Vomiting, diarrhea, mild abdominal pain (Moderate)

Is American Bittersweet toxic to Horses?

Diarrhea, gastrointestinal distress, reduced appetite (vomiting is rare in horses) (Moderate)

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Toxicity Details

Humans

Non-toxic

No confirmed cases of human toxicity have been formally reported, though intentional ingestion is not advised

Cats

Moderate

Vomiting, diarrhea, mild gastrointestinal discomfort

Dogs

Moderate

Vomiting, diarrhea, mild abdominal pain

Horses

Moderate

Diarrhea, gastrointestinal distress, reduced appetite (vomiting is rare in horses)

Toxicity Snapshot

Toxic PartsAll plant parts, especially the bright orange-red berries and woody bark, are considered toxic

Exposure RoutePrimary exposure is via accidental ingestion of wild plant material or decorative dried False Bittersweet arrangements

Toxic CompoundsSesquiterpene alkaloids

First Aid & Prevention

First 30 Minutes

• Remove any remaining plant material from the animal's mouth and nearby area to stop further ingestion
• Collect a sample of the ingested plant to help your vet make an accurate diagnosis quickly
• Do not induce vomiting or give home remedies unless explicitly instructed to do so by a licensed vet

Contact Vet Immediately

• Your cat, dog, or horse has ingested any quantity of False Bittersweet plant material
• Your animal develops vomiting, diarrhea, lethargy, or appetite loss after potential exposure
• You cannot confirm the identity of a plant your animal has recently ingested

Prevention

• Remove all False Bittersweet plants from yards, pastures, and areas accessible to pets and livestock
• Store dried False Bittersweet decorative wreaths and arrangements well out of reach of curious pets
• Educate household members and animal caregivers to recognize this plant and avoid exposure for animals

Treatment & Prognosis

• Veterinary decontamination (induced vomiting, activated charcoal) if ingestion occurred within the last 2 hours
• Symptomatic supportive care including anti-emetics, fluid therapy, and electrolyte monitoring
• Short-term dietary adjustment to support gastrointestinal recovery until all symptoms fully resolve

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Professional Toxicology

Scientific NameCelastrus scandens

AliasesAmerican Bittersweet

Toxicity Grade

HumansNon-toxic

CatsModerate

DogsModerate

HorsesModerate

Target Organs

Gastrointestinal tractDigestive system mucosa

Mechanism of Action

• Sesquiterpene alkaloids irritate the gastrointestinal mucosal lining after ingestion, triggering inflammation and associated digestive symptoms

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle: Limited formal data available, but ingestion is expected to cause similar gastrointestinal distress as reported in horses

Small companion mammals (rabbits, guinea pigs): Ingestion may lead to diarrhea, appetite loss, and digestive upset, and should be treated as an emergency

Confusion Risk

The following plants look similar and may be confused:

Oriental Bittersweet Celastrus orbiculatus

Both produce bright orange-red autumn berries and grow as climbing woody vines; False Bittersweet only bears flowers and berries at branch tips, while Oriental Bittersweet has berries along full stem lengths

Bittersweet Nightshade Solanum dulcamara

Both share the common name 'bittersweet' and produce bright red attractive berries; Bittersweet Nightshade has distinct purple star-shaped flowers and lobed leaves, unlike the simple oval leaves of False Bittersweet

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Related Toxic Plants

Oriental Bittersweet

Celastrus orbiculatus

Moderately toxic

Climbing Staff Tree

Celastrus paniculatus

Moderately toxic

European Spindle

Euonymus europaeus

Highly toxic

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Data Sources

1. ASPCA Animal Poison Control

This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.

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