An alkaloid compound found in plants like greater celandine, with potential medicinal or toxic properties.
From Chelidonium (celandine) plus the suffix '-in' used for organic compounds and alkaloids. Named after the plant family associated with the swallow in classical tradition.
Chelidonin is one of several alkaloids in celandine that can be both healing and poisonous depending on dosage—medieval herbalists walked this knife's edge all the time, learning through careful trial which plants helped and which harmed!
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