It may look like a pretty flower, but poison hemlock (or conium maculatum) is at heart a deadly weapon. Once ingested, it will paralyze various systems in the victim's body, with paralysis of the respiratory system as the usual cause of death. Worst of all, the mind is active until the last breath--so leave the name-calling until you're sure your subject is unresponsive.
This metalloid element is used in pesticides, but it can do a lot more than just kill insects. Ingesting small amounts over time raises the probability of cancer. For more immediate results, we suggest a high dose which causes stomach cramps, diarrhea, confusion, convulsions, vomiting, and death. Be warned, however: evidence of chronic arsenic ingestion lasts for months or even years later in the victim's hair and fingernails. Dispose carefully.
Macbeth used nightshade to poison an entire army of Danes before becoming King of Scotland, so imagine what the plant can do to a single person. Not only does ingesting it lead to death, but many peculiar symptoms such as complete loss of voice, frequent bending over, continuous movement of the hands and fingers, and dilated pupils. It's said that the poison may be prevented by swallowing a large glass of warm vinegar or mustard and water. So don't keep those around.
Cyanide poisoning is for those who live the fantasy of a mad scientist. Generally delivered in the form of gaseous hydrogen cyanide, potassium cyanide, or sodium cyanide, the poisonous ion makes the cells of an organism unable to use oxygen. In simpler terms: coma, seizures, apnea, cardiac arrest. Beautiful.
Curare is usually used for medical purposes (but when has that ever stopped anyone?), and causes paralysis and death in the "patient" much like the hemlock and strychnine plant. What's different is that even after the respiratory system is paralyzed, the heart may continue beating for some time. So if you're looking for a rather slow and horrific death, well, this one's you're guy.
Strychnine is an alkaloid that paralyzes the victim's respiratory system. Dr. Thomas Neil Cream used itto kill at least seven women and one man between 1878 and 1892. After serving ten years in jail in America, he returned to London to continue his poisoning act. Some say he might even be the same man as "Jack the Ripper." Sound appealing?
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