The Apothecary Jar artifact can be found at Ethir Poros, in the south-western part of Sea of Núrnen.
Apothecary Jar, Third Age, circa 1940
"This jar once held the elixir which sustains and corrupts the Queen of the Shore. When Marwen awoke screaming from nightmares showing her the Tower of Sauron approaching Núrn she sought wisdom. She traveled to the Grey Mountains seeking answers.
When she returned she brought the elixir with her, and under its influence she spent many hours staring into the sacred flame. In it she heard a calming voice and found hope for her people, if not for herself."
"The North collapses upon us. A Tower of nightmare builds in Núrnen. The Nameless One returns.
Mother, take this.
Thank you, my child.
These visions corrode you. And what medicine we still have is fast done away.
My visions are the hope of Núrnen. If I must sacrifice myself for my people, so be it.
What happened in the Grey Mountains, mother?
What happened, Lithariel? I left with the strength we need."