Is Woodland horsetail Poisonous

Woodland horsetail is only likely to become toxic to people when ingested in large quantities. The plant contains the enzyme thiaminase which removes vitamin B from the body, causing health issues. Consuming small amounts of the plant is not a health risk to people who consume typical quantities of vitamin B. This toxic enzyme is destroyed by heat and also when the plant is dried. In the unlikely event of a person ingesting large quantities of raw woodland horsetail symptoms include fatigue, weakness, constipation, weight loss and loss of appetite, numbness, balance problems, and confusion.

Woodland horsetail poses a moderate threat to feline health if ingested accidentally. This species carries the toxic enzyme thiaminase, which can be found throughout the plant's structure, making all parts potentially harmful. After exposure, cats may exhibit visible signs of physical discomfort or distress. As these symptoms may indicate a more serious underlying condition, it is imperative for cat owners to immediately seek professional veterinary assistance for prompt treatment.

Woodland horsetail poses a moderate toxicity risk to dogs. Canines may accidentally ingest parts of woodland horsetail, leading to potential poisoning. The entire plant is toxic, and if consumed, it can cause adverse health effects in dogs. Symptoms of poisoning from woodland horsetail can include lethargy, loss of appetite, vomiting, diarrhea, or more severe neurological signs due to the presence of the enzyme thiaminase which disrupts thiamine (vitamin B1) metabolism. It is imperative for dog owners to monitor their pets closely and prevent access to this plant. In the event that a dog ingests woodland horsetail, immediate veterinary care is crucial to manage the symptoms effectively and provide supportive treatment.