Atroquinine

Atroquinine is a fictional synthetic substance featured in Apollo Justice: Ace Attorney. It is extremely poisonous to humans.

Symptoms
Atroquinine is a very potent poison that paralyzes the nervous system. It is lethal at 0.002 mg. It takes at least 15 minutes after ingestion for adverse effects to show. Symptoms include trembling of the limbs, arching of the back and burning of the throat.

Known uses
Main article: Turnabout Succession

When Kristoph Gavin visited the house of Drew Misham to request a forgery, he left a commemorative stamp of the Gramarye Troupe and a bottle of nail polish, both of which he had contaminated with atroquinine, to prevent Misham from talking about him. He told Drew's daughter Vera Misham that the nail polish was a magic charm that would protect her from danger, and he instructed Drew by letter to send a reply confirming receipt of his payment for the forgery. However, Vera grew fond of the stamp and left it in a frame. Seven years later, Drew sent a letter to Gavin, telling him to remove the "magic charm" that Vera would talk about but not identify; lacking a stamp, he used the poisoned stamp, which killed him. During the subsequent trial, Vera was called to the stand. She became nervous and bit her nails, which had the poisoned nail polish on them, and fell into a coma.

To date, Vera Misham is the only person known to have survived a near-lethal dosage of atroquinine poisoning.

The Gavinners 2025 platinum hit song "Atroquinine, My Love" features atroquinine.