Franz Köhler Depending on the species, the<unk>  plant may contain several deadly physiological and chemically related cardiac and steroidal glycosides. Thus, the<unk>  plants have earned several, more sinister, names: dead man's bells and witch's gloves.<unk>  intoxication, known as<unk> m, results from an overdose of<unk>  and causes gastrointestinal disturbances and pain, severe headache, nausea, vomiting and diarrhoea, cardiac arrhythmias, as well as sometimes resulting in xanthopsia (jaundiced or yellow vision). The toxins can be absorbed via the skin or ingestion; early symptoms of<unk> m include nausea, vomiting, diarrhoea, abdominal pain, wild hallucinations, delirium, and severe headache. Depending on the severity of the toxicosis, the victim may later suffer irregular and slow pulse, tremors, various cerebral disturbances, especially of a visual nature (unusual colour visions (see xanthopsia) with objects appearing yellowish to green, and blue halos around lights), convulsions, and deadly disturbances of the heart. Other oculotoxic effects of<unk>  include generalized blurry vision, as well as the appearance of blurred outlines ('halos'). Other things mentioned are dilated pupils, drooling, weakness, collapse, seizures, and even death. Because a frequent side effect of<unk>  is reduction of appetite, some individuals have used the drug as a weight-loss aid.<unk>  poisoning can cause heart block and either bradycardia (decreased heart rate) or tachycardia (increased heart rate), depending on the dose and the condition of one's heart. The electric cardioversion (to "shock" the heart) is generally not indicated in ventricular fibrillation in<unk>  toxicity, as it can increase the dysrhythmia. Furthermore, the classic drug of choice for ventricular fibrillation in emergency setting, amiodarone, can worsen the dysrhythmia caused by<unk> , therefore, the second-choice drug lidocaine is more commonly used. The entire plant is toxic (including the roots and seeds). Mortality is rare, but case reports do exist. Most plant exposures occur in children younger than six years and are usually unintentional and without associated significant toxicity. More serious toxicity occurs with intentional ingestion by adolescents and adults. In some instances, people have confused foxglove with the relatively harmless comfrey (Symphytum) plant, which is sometimes brewed into a tea, with fatal consequences. Other fatal accidents involve children drinking the water in a vase containing<unk>  plants. Drying does not reduce the toxicity of the plant. The plant is toxic to animals, including all classes of livestock and poultry, as well as felines and canines.
Digitalis
Angioedema
Myxedema
Diabetes insipidus
Cyanosis
Nausea
Venospasm
Acne