Actually, Amanita Muscaria probably has the same alcaloid, as it induces too visions of small people watching you from the forest's bushes... Don't ask me how I know it.
Do you know this from personal experience or after watching a "Hamilton's Pharmacopeia" episode or a similar documentary?
Never heard of those, but many sites that sell THC/CBD products also sell amanita because they know it has desired effects and is mostly legal in the US.