Yesterday-today-and-tomorrow Toxic?

Updated 2026-03-06| 4 min read| 2,309 found this helpful

All parts of the plant are toxic, with berries being the most toxic, posing high risk to animals including dogs.

Symptoms have a 15-18 hour latency after ingestion, ranging from mild ataxia to hard-to-treat seizures lasting over 48 hours.

Immediate decontamination and symptomatic supportive treatment are required after confirmed or suspected ingestion.

FAQ

Is Yesterday-today-and-tomorrow toxic to Humans?

No specific human symptom data recorded; expected symptoms include oral irritation, vomiting, diarrhea, and neurological effects such as tremors if ingested. (High)

Is Yesterday-today-and-tomorrow toxic to Cats?

No species-specific symptom data available; potential effects include vomiting, diarrhea, ataxia, and neurological symptoms consistent with pyrrol alkaloid poisoning. (High)

Is Yesterday-today-and-tomorrow toxic to Dogs?

15-18 hour latency after ingestion; symptoms include salivation, oronasal irritation, vomiting, bloody diarrhea, anxiety, depression, ataxia, muscle tremor, hyperthermia, central seizures, nystagmus and opisthotonus, with seizures possibly lasting over 48 hours. (High)

Is Yesterday-today-and-tomorrow toxic to Horses?

No species-specific symptom data available; ingestion is expected to cause gastrointestinal distress and neurological impairment. (High)

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Toxicity Details

Humans

High

No specific human symptom data recorded; expected symptoms include oral irritation, vomiting, diarrhea, and neurological effects such as tremors if ingested.

Cats

High

No species-specific symptom data available; potential effects include vomiting, diarrhea, ataxia, and neurological symptoms consistent with pyrrol alkaloid poisoning.

Dogs

High

Horses

High

No species-specific symptom data available; ingestion is expected to cause gastrointestinal distress and neurological impairment.

Toxicity Snapshot

Toxic PartsWhole plant, especially the berries

Exposure RouteIngestion is the primary exposure route; direct contact with plant parts may cause oral/nasal mucous membrane irritation

Toxic CompoundsPyrrol alkaloid: Pyrrol-3-Carboxamid

First Aid & Prevention

First 30 Minutes

• If ingestion is suspected within 1 hour, safely induce vomiting for the affected species and administer activated charcoal to reduce toxin absorption.
• Rinse the mouth thoroughly with clean water if the affected individual has chewed on plant parts to reduce mucosal irritation.
• Closely monitor vital signs including body temperature and neurological status while arranging medical/veterinary care.

Contact Vet Immediately

• Immediately after confirmed or suspected ingestion, even if no symptoms are present, due to the long 15-18 hour latency period.
• If any symptoms appear, including vomiting, diarrhea, uncoordinated movement, tremors or seizures.
• If the ingested amount is large or includes berries, the most toxic part of the plant.

Prevention

• Place the plant in areas completely inaccessible to children, cats, dogs and horses.
• Educate household members and pet caregivers about the high toxicity of this plant to avoid accidental ingestion.
• Avoid planting this species in gardens or pastures accessible to pets or livestock.

Treatment & Prognosis

• Perform decontamination measures including induced vomiting and activated charcoal administration if ingestion occurred recently.
• Provide symptomatic support: administer Ringer's lactate for fluid replacement, diazepam or phenobarbital to control seizures, and appropriate antibiotics if secondary infection is suspected.
• Monitor the affected individual for at least 48 hours post-ingestion due to the risk of long-lasting severe symptoms.

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Professional Toxicology

Scientific NameBrunfelsia pauciflora (Cham. & Schltdl.) Benth.; Brunfelsia calycina Benth.

AliasesMorning-noon-and-night、Kiss Me Quick、Brazil raintree、Grosskelchige Brunfelsie、Brunfélsie pauciflore、Hier-Aujourd'hui-Demain、Ieri, oggi e domani

Toxicity Grade

HumansHigh

CatsHigh

DogsHigh

HorsesHigh

Target Organs

Gastrointestinal tractNervous system

Mechanism of Action

• Pyrrol-3-Carboxamid, a pyrrol alkaloid in the plant, disrupts the body's serotonin balance, leading to gastrointestinal and neurological dysfunction.

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Dog: Confirmed case reports show ingestion causes severe gastrointestinal and neurological symptoms, including long-lasting seizures that may be unresponsive to standard treatment.

Cat: No specific case reports on file, but expected to experience similar toxic effects as dogs if the plant is ingested.

Horse: No specific case reports on file, but ingestion is expected to lead to gastrointestinal damage and neurological impairment.

Confusion Risk

The following plants look similar and may be confused:

Other Brunfelsia species Brunfelsia spp.

Other species in the Brunfelsia genus have highly similar appearance and share equivalent toxic properties, making them easily misidentified.

Busy Lizzie Impatiens walleriana

Visually similar to Brunfelsia pauciflora, but Impatiens walleriana has far lower toxicity, leading to potential misjudgment of risk levels.

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Related Toxic Plants

Moderate to High toxicity

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Data Sources

1. CliniTox (Universität Zürich)

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