Dosage is EVERYTHING. If you're slamming a bunch into your gut, you will die. For example, one night I did 8-9 grams of psilocybin (combined with DMT and a touch of acid - suffice it to say, I broke through the edge of the universe and looked back in dismay). Half that in Amanitas would probably kill a person.

HOWEVER, since this is something that seems to come up a lot, here are the potential side effects and a proposal to limit sales of these things due to dumbasses like the guy described below.

https://www.ajpmonline.org/article/S0749-3797(24)00163-6/fulltext

MUSCARIA

Increased consumer interest and widespread availability are concerns for public health because Amanita muscaria products contain compounds that are toxic including muscimol, ibotenic acid, and muscarine.9 Most scientific literature on the health effects of Amanita muscaria in humans pertains to studies of the ingestion of raw Amanita muscaria mushrooms. These effects include dizziness, dysphoria, visual hallucinations, agitation, ataxia, muscle fasciculation, seizures, and coma.12 While death is rare, it has been reported as an outcome, including a case reported in the last year of a 44-year-old man who died after ingesting 4 dried Amanita muscaria mushroom caps.13 The first documented case of hospitalization due to Amanita muscaria consumption in the United Kingdom was reported in July 2023.14 This case involved a 46-year-old woman who had ingested dried mushrooms (0.5 grams) daily for 2 weeks as part of what is referred to as a “microdosing” regimen that was being followed in an attempt to reduce anxiety without inciting psychotropic properties. She reportedly purchased 20 grams of Amanita muscaria mushrooms from a website advertised on social media.

You dry the red ones and this makes something in them less bad for your stomach.

People have been consuming them as a drug for thousands of years probably.

Other anamitas are maybe poisonous, don't know

There is a youtuber that ate some, he also talks (and tries) a lot of natural drugs. While I'd never recommend someone do it, almost anything is toxic in the right dosages (even water).