Limited Invulnerability Potion

Limited Invulnerability Potion is a potion that reduces physical damage taken.

Source
This potion is made by Alchemists with a skill level of 250.

The recipe is a World Drop.

In the RPG
Invulnerability Potions are also known as Potion of Invulnerability. Strong drink may make warriors feel invulnerable, but this hero's mead makes the feeling real. The potion draws from the life force of the character drinking it, using that energy to strengthen and harden the body.

This elixir looks like quicksilver in a vial, but when poured seems more like a thick syrup. Despite the metallic appearance, it has a mild citrus taste.