Bitter vetch Toxic?

Updated 2026-03-06| 2 min read| 3,378 found this helpful

Lathyrus linifolius (Reichard) Bässler

Bitter vetch has no confirmed toxic parts for humans or common domestic animals including cats, dogs, and horses.

Its sweet-tasting tubers are safe for human consumption, and the whole plant is of moderate nutritional value as animal fodder.

It carries a high confusion risk with other Lathyrus species, many of which are highly toxic and can cause permanent neurological damage.

FAQ

Is Bitter vetch toxic to Humans?

No reported poisoning symptoms associated with confirmed consumption of this plant. (Non-toxic)

Is Bitter vetch toxic to Cats?

No reported poisoning symptoms associated with confirmed consumption of this plant. (Non-toxic)

Is Bitter vetch toxic to Dogs?

No reported poisoning symptoms associated with confirmed consumption of this plant. (Non-toxic)

Is Bitter vetch toxic to Horses?

No reported poisoning symptoms associated with confirmed consumption of this plant. (Non-toxic)

Not sure which plant? Snap a photo to ID in 1 secondGet App

Toxicity Details

Humans

Non-toxic

No reported poisoning symptoms associated with confirmed consumption of this plant.

Cats

Non-toxic

No reported poisoning symptoms associated with confirmed consumption of this plant.

Dogs

Non-toxic

No reported poisoning symptoms associated with confirmed consumption of this plant.

Horses

Non-toxic

No reported poisoning symptoms associated with confirmed consumption of this plant.

Toxicity Snapshot

Toxic PartsNo known toxic parts; whole plant is moderately suitable as livestock fodder, and its tubers are edible for humans.

Exposure RouteNo toxic exposure routes confirmed for this species; ingestion is not associated with poisoning risk.

Toxic Compounds

First Aid & Prevention

First 30 Minutes

• Rinse mouth with clean water if unconfirmed wild legume material was consumed.
• Monitor for mild, non-specific digestive discomfort as a general precaution.
• Verify plant identity immediately to rule out misidentification with toxic Lathyrus lookalikes.

Contact Vet Immediately

• If severe, persistent vomiting, diarrhea, or neurological symptoms appear after consumption.
• If the identity of the consumed plant cannot be 100% confirmed as Lathyrus linifolius.
• If the affected animal has a known history of legume allergies.

Prevention

• Confirm full species identification before harvesting wild specimens for consumption or fodder use.
• Clear pasture areas of confirmed toxic Lathyrus species to avoid unintended livestock exposure.
• Label forage supplies clearly to avoid mixing non-toxic Lathyrus linifolius with toxic related species.

Treatment & Prognosis

• No specific treatment is required for confirmed ingestion of Lathyrus linifolius.
• Provide supportive care including oral fluids and rest if mild digestive discomfort occurs.
• Administer targeted treatment for toxic Lathyrus poisoning if misidentification is confirmed.

Emergency? Open PlantFun for real-time AI guidanceGet App

Professional Toxicology

Scientific NameLathyrus linifolius (Reichard) Bässler

AliasesHeath pea、Lathyrus montanus Bernh.

Toxicity Grade

HumansNon-toxic

CatsNon-toxic

DogsNon-toxic

HorsesNon-toxic

Target Organs

Mechanism of Action

Other Species Risk (CliniTox)

Information from CliniTox veterinary text.

Cattle, sheep, and goats: No toxicity reported; the plant is classified as a moderate nutritional value forage option for ruminants

Small domestic herbivores (rabbits, guinea pigs): No confirmed toxicity; small amounts can be safely included in fresh forage mixes

Confusion Risk

The following plants look similar and may be confused:

Other Lathyrus species Lathyrus spp.

Most other Lathyrus species contain neurotoxic compounds that cause permanent lathyrism with regular consumption, while Lathyrus linifolius is non-toxic; careful morphological identification is required to distinguish them.

Use PlantFun to scan and avoid misidentificationGet App

Related Toxic Plants

Grass pea

Lathyrus sativus

Moderate to Severe: Chronic consumption causes irreversible neurotoxic lathyrism in humans and livestock

Lupine

Lupinus spp.

Moderate to High: Contains toxic quinolizidine alkaloids that cause neurological damage and birth defects in livestock

Black locust

Robinia pseudoacacia

Moderate: All parts contain robin toxin that causes gastrointestinal distress, weakness, and organ damage in humans and animals

Download PlantFun App

Identify, grow and care for plants effectively!

Instant Plant ID

Take a photo to quickly identify plants.

Smart Care Reminders

Generate watering and care schedules.

Toxicity & Disease Diagnosis

Identify toxic plants and pests with treatment advice.

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.

View Full Plant Wiki