White clover Toxic?

Generally non-toxic for most species; poisoning only occurs in rare cases tied to intake volume, weather, season, or fungal infestation
Fungal infestation with Rhizoctonia leguminicola, Botrytis fabae Sardiña, or Slafractonia causes toxicity, and infested plants have visible black spots
Contains phytoestrogens, cyanogenic glycosides, and photosensitizing compounds that trigger adverse effects at high exposure levels
FAQ
Is White clover toxic to Humans?
No confirmed severe human toxicity cases reported in available clinical data; mild digestive upset may occur with very large intake (Non-toxic)
Is White clover toxic to Cats?
No species-specific toxicity symptoms documented; risk is very low, with mild digestive upset possible only after extreme intake of infested material (Low)
Is White clover toxic to Dogs?
No species-specific toxicity symptoms documented; risk is very low, with mild digestive upset possible only after extreme intake of infested material (Low)
Is White clover toxic to Horses?
No specific severe toxicity cases reported; rare risk of mild photosensitivity or digestive upset with intake of large volumes of infested clover (Low)
Toxicity Details
No confirmed severe human toxicity cases reported in available clinical data; mild digestive upset may occur with very large intake
No species-specific toxicity symptoms documented; risk is very low, with mild digestive upset possible only after extreme intake of infested material
No species-specific toxicity symptoms documented; risk is very low, with mild digestive upset possible only after extreme intake of infested material
No specific severe toxicity cases reported; rare risk of mild photosensitivity or digestive upset with intake of large volumes of infested clover
Toxicity Snapshot
First Aid & Prevention
First 30 Minutes
- • Immediately remove all remaining white clover material from the affected individual's access to prevent further ingestion
- • If the individual is alert and ingestion occurred within 2 hours, induce vomiting per medical/veterinary guidance to reduce absorption
- • Move individuals showing signs of skin irritation or photosensitivity to a fully shaded area away from direct sunlight
Contact Vet Immediately
- • Signs of cyanide poisoning are observed: bright red blood/mucous membranes, difficulty breathing, excessive salivation, uncoordinated movement, or seizures
- • Livestock exhibit reproductive abnormalities (abnormal heat cycles, reduced milk yield, abortion, low conception rate) after prolonged clover intake
- • Severe symptoms including collapse, extreme respiratory distress, or loss of consciousness occur after ingestion
Prevention
- • Inspect clover forage regularly for black spots indicating toxic fungal infestation, and discard all infested batches
- • Limit white clover proportion in livestock forage mixes to avoid excessive intake of phytoestrogens and cyanogenic glycosides
- • Restrict access to large clover patches for animals with known photosensitivity or liver impairment during periods of intense sunlight
Treatment & Prognosis
- • Administer decontamination measures such as activated charcoal to reduce remaining toxin absorption under professional supervision
- • For confirmed cyanide poisoning: give 1% sodium nitrite (20-25 mg/kg body weight IV) followed by 25% sodium thiosulfate (0.5-1.25 g/kg body weight IV) per veterinary guidance
- • Provide supportive care: avoid sun exposure for photosensitivity cases, and deliver reproductive support for livestock with hyperestrogenism
Professional Toxicology
• Phytoestrogens disrupt reproductive hormone signaling, causing hyperestrogenism in sensitive livestock with prolonged high intake
• Cyanogenic glycosides metabolize to release hydrogen cyanide, which impairs blood oxygen transport leading to cyanosis and organ damage
• Photosensitizing compounds accumulate in skin tissue after liver processing, triggering light-induced skin irritation and damage in ruminants
Information from CliniTox veterinary text.
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Data Sources
This information is for reference only and does not constitute medical advice. If ingestion or poisoning is suspected, seek medical or veterinary attention immediately.