Stronger than any pepper: Nigerian plant has a toxin that registers 16 billion units on the heat scale.

Written by Fabio Lucas Carvalho

Published on 14/04/2026 at 15:11

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The resin extracted from this African succulent contains resiniferatoxin, a substance so extreme that it is being tested by medicine as a revolutionary alternative for the treatment of chronic pain.

The Euphorbia poissonii, a plant native to northern Nigeria, holds the title of the spiciest substance on the planet due to its active component, resiniferatoxin (RTX).

This toxin is so potent that the hottest pepper in the world seems mild in comparison to its sensory effects. The plant does not belong to the pepper family, but rather to the succulent genus, and its dangerousness requires extremely cautious handling in laboratory or natural environments.

The chemical potency of Euphorbia poissonii resin

The Scoville scale, used to measure the heat of peppers, demonstrates the abysmal disparity between Euphorbia poissonii and other known spicy agents. While the Carolina Reaper pepper reaches about 2.2 million heat units, pure resiniferatoxin registers the impressive mark of 16 billion units.

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Medicinal applications and the potential of resiniferatoxin

Despite the risks, science has been exploring the properties of Euphorbia poissonii for the development of new medical treatments. Resiniferatoxin works by binding to specific pain receptors in sensory neurons, causing an overload that eventually desensitizes them.

This unique mechanism offers a promising alternative for managing chronic pain in patients with terminal conditions or severe diseases.

Researchers are conducting studies to transform the venom of Euphorbia poissonii into a potent and long-lasting painkiller. Unlike opioids, RTX does not affect other sensory functions such as touch or motor coordination, focusing exclusively on pain signals. If clinical trials continue to progress, the substance could revolutionize the way medicine treats intense physical suffering without the side effects of traditional medications.

Safety and precautions in handling the plant

The cultivation or study of Euphorbia poissonii requires strict safety protocols, including the use of gloves, masks, and full eye protection. Experts warn that inhaling particles or accidental skin contact can provoke an immediate and painful inflammatory reaction. The plant serves as a reminder of the chemical power present in nature, capable of being both a lethal threat and a healing tool.

The preservation of Euphorbia poissonii in its natural habitat is important to ensure that future research can be conducted. Global interest in resiniferatoxin has increased the need to monitor the trade and access to this Nigerian species.

The balance between the inherent danger and the medicinal benefit makes this plant one of the most fascinating topics in contemporary botany and pharmacology.

With information from Oddity Central

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Stronger than any pepper: Nigerian plant has a toxin that registers 16 billion units on the heat scale.

The resin extracted from this African succulent contains resiniferatoxin, a substance so extreme that it is being tested by medicine as a revolutionary alternative for the treatment of chronic pain.

The chemical potency of Euphorbia poissonii resin

Medicinal applications and the potential of resiniferatoxin

Safety and precautions in handling the plant

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Stronger than any pepper: Nigerian plant has a toxin that registers 16 billion units on the heat scale.

The resin extracted from this African succulent contains resiniferatoxin, a substance so extreme that it is being tested by medicine as a revolutionary alternative for the treatment of chronic pain.

The chemical potency of Euphorbia poissonii resin

Medicinal applications and the potential of resiniferatoxin

Safety and precautions in handling the plant

Scientists enter a narrow, flooded cave 500 meters deep and find giant dinosaur footprints on the ceiling measuring up to 1.25 meters, preserved in such a rare way that a new type of trace had to be created.

A giant half-ton ring fell in Kenya from space, and more than a year later, scientists still do not know where it came from.

In Botswana, a salt flat of up to 16,000 km² that was once an African megalake spends months as an absolute white desert, but during the rainy season it transforms into a shallow sea that reappears from nowhere and can be seen from space in the middle of southern Africa.

Seen from space, an image taken by an astronaut shows an unlikely oasis in the Saudi Arabian desert, protected by a terrain that slows the advance of sand, surrounded by green circles, remnants of an extinct lake and nearly 10,000 years of preserved history.

Bavarian archaeologists unearthed a medieval skeleton that had an articulated iron hand in place of its left arm, and the discovery reveals that doctors were already creating sophisticated prosthetics over 500 years ago.

For the first time, scientists have mapped the Etna magma system in almost real time and discovered where the volcano was storing large volumes of molten material before years of eruptions, revealing an underground reservoir that fills and reorganizes like a living organism beneath the mountain.

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