Serious
Pantherina syndrome
Ibotenic acid and muscimol
Onset after the meal
30 minutes to 3 hours
Inside six hours, which is the reassuring side of the line, with one qualification: a mixed wild meal can produce an early reaction that hides a late one.
Attacks
The central nervous system
What it does
Confusion, agitation, distorted perception of size and distance, euphoria alternating with deep sedation, nausea and vomiting, muscle twitching, and in larger doses seizures and coma.
How it runs
Usually resolves over 12 to 24 hours, often with no memory of it. Deaths are very rare and generally follow accidents or aspiration rather than the toxin itself.
Treatment
Supportive: a quiet room, observation, and sedation if agitation is dangerous. Not something to manage at home.
The catch
Dose is unpredictable between specimens of the same species from the same patch, and the panther cap is several times stronger than the fly agaric. People treating either as a recreational substance are dosing blind.
Species that cause it
This is reference material, not clinical guidance and not a substitute for a poison centre. If somebody is unwell after eating a wild mushroom, call one now, tell them the interval between the meal and the first symptom, and keep an uncooked specimen.