This list covers 17 poisons, running alphabetically from “VX” to “Verrucotoxin”. They come from wildly different places, including military labs, garden plants, venomous animals, industrial chemicals, and even household products. Some were built as weapons or pesticides, while others turn up naturally in food, medicine, or the outdoors, and each one affects the body in its own distinct way.

Poisons are substances that disrupt the normal functions of the body, sometimes causing serious harm or death even in small amounts. Some, like VX, were engineered specifically to be lethal, while others, like vitamin A, are only dangerous in excess. One of the more surprising entries is vincristine, a chemotherapy drug that comes from a common flowering plant and is toxic in the wrong dose but lifesaving in the right one.

Below you’ll find the table with the poison, source, effects, antidote, and description for each entry.

Poison: the common or scientific name of the substance, so you can quickly identify what you’re looking at.

Source: where the poison comes from, whether that’s a plant, animal, chemical process, or manufactured product.

Effects: the symptoms and health problems the poison causes, helping you understand how serious exposure can be.

Antidote: the treatment or response used to counter the poison, when one is known to exist.

Description: a short explanation that puts the poison in context, including how it works or why it stands out.

Poisons

PoisonSourceEffectsAntidote
VXSynthetic organophosphate nerve agentParalysis, seizures, respiratory failureAtropine and pralidoxime
Vacor (Pyriminil)Synthetic rodenticide compoundDestroys insulin-producing pancreas cells, causes permanent diabetes and nerve damageNiacinamide (vitamin B3) if given quickly
Visine (Tetrahydrozoline)Over-the-counter eye-drop decongestantDangerously slow heart rate, plunging blood pressure, vomitingSupportive care in a hospital setting
Vinyl ChlorideIndustrial gas used to make PVC plasticLiver damage, dizziness, long-term cancer riskNo specific antidote; supportive care
Vanadium PentoxideIndustrial dust from vanadium ore processingLung irritation, greenish tongue coating, coughing and breathing troubleSupportive care
Vitamin A (Hypervitaminosis A)Excess supplements or foods like polar bear liverNausea, hair loss, blurred vision, dangerous pressure in the skullStop intake; supportive care
Vomitoxin (Deoxynivalenol)Fusarium mold growing on wheat and cornNausea, vomiting, loss of appetiteSupportive care
VeratridineAlkaloid from Veratrum (false hellebore) plantsNausea, dangerously low blood pressure, irregular heartbeatAtropine and supportive care
Veratrum Album (White Hellebore)Roots and leaves of the white hellebore plantSevere vomiting, slowed heart rate, low blood pressureAtropine and supportive care
Vinca Alkaloids (Vincristine)Madagascar periwinkle plantNerve damage, severe constipation, organ toxicity in overdoseNo specific antidote; supportive care
Virginia Creeper BerriesBerries of the Virginia creeper climbing vineMouth and throat irritation, stomach upsetSupportive care
Vetch (Toxic Vicia Species)Seeds of certain wild vetch plantsWeakness and breathing difficulty, mainly in grazing animalsSupportive care
Viper VenomVenom of viperid snakes such as addersTissue damage, internal bleeding, severe swellingSpecies-specific antivenom
VipoxinToxin from the horned viper’s venomNerve disruption and impaired blood clottingAntivenom
VolkensinSeeds of the African “poison peach” plantShuts down cell protein production, leading to organ failureNo specific antidote; supportive care
ViscotoxinEuropean mistletoe leaves and berriesHeart rhythm disturbances, drop in blood pressureSupportive care
VerrucotoxinVenom of the stonefishIntense pain, cardiac distress, breathing difficultyStonefish antivenom

Descriptions

VX
One of the deadliest chemical weapons ever made, VX blocks nerve signals and can kill through skin contact with just a tiny droplet.
Vacor (Pyriminil)
This 1970s rat poison was pulled from the market after it was found to permanently wreck the human pancreas, leaving survivors diabetic for life.
Visine (Tetrahydrozoline)
Meant to soothe red eyes, this common drug becomes toxic when swallowed and has been used in real poisoning cases to crash a victim’s heart rate.
Vinyl Chloride
A colorless industrial gas that workers can inhale during plastic manufacturing, linked to liver damage and a rare form of liver cancer after prolonged exposure.
Vanadium Pentoxide
A metallic dust encountered in steel and chemical plants that irritates the lungs and, oddly, can turn the tongue a greenish color.
Vitamin A (Hypervitaminosis A)
Too much of this essential vitamin, famously from eating polar bear or seal liver, overwhelms the body and can cause serious brain swelling.
Vomitoxin (Deoxynivalenol)
A mold toxin that contaminates grain crops in wet weather, causing vomiting and stomach upset even at low levels in food.
Veratridine
A plant toxin that jams open the body’s sodium channels, leading to a crashing heart rate and blood pressure if the plant is mistakenly eaten.
Veratrum Album (White Hellebore)
Once confused with edible wild herbs by foragers, this plant’s alkaloids can send the heart rate crashing after just a small dose.
Vinca Alkaloids (Vincristine)
Derived from a common flowering plant and used in controlled doses as chemotherapy, this compound is highly toxic to nerves and organs if overdosed.
Virginia Creeper Berries
The dark blue berries of this popular garden vine contain sharp calcium oxalate crystals that irritate the mouth and digestive tract if eaten.
Vetch (Toxic Vicia Species)
Some wild vetch seeds contain cyanide-releasing compounds that can poison livestock that graze on them, though human cases are rare.
Viper Venom
Delivered through a bite, this venom breaks down tissue and disrupts normal blood clotting, causing painful swelling and dangerous bleeding.
Vipoxin
A potent venom component from the horned viper that combines a nerve-damaging toxin with an enzyme that interferes with blood clotting.
Volkensin
A extremely potent plant toxin related to ricin, found in an African shrub and studied for its ability to destroy cells from the inside.
Viscotoxin
A small toxic protein in the leaves and berries of mistletoe that can affect heart rhythm and blood pressure if enough is consumed.
Verrucotoxin
Injected through the stonefish’s camouflaged spines, this venom causes excruciating pain and can seriously strain the heart and lungs.
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