Nine Yin-Yang Pills!
Every single person present shudders at the mention of this name.
This is known to be an aggressively potent poison in the legends.
The poison of all poisons!
Its potency is terrifying, after consuming it, once the medicinal effect comes into play, the channels throughout the body will be filled with devastating energy.
The person who consumes it would first have to endure unbearable, excruciating pain—this agony stems from the very soul.
Over time, their channels would rot slowly, followed by the destruction of their vital energy source.
And that's not all.
Projectile vomiting, blindness, and delirium are all secondary symptoms.
The end result for the poisoned individual? Decomposing into a pile of festering flesh and oozing fluid.
A gruesome death awaits.
Of course, there are many poisons that have similar effects, but the terrifying aspect of this medicinal pill is that it doesn't directly cause death once its effects kick in.