A primary alkaloid found in betel nuts, also known as arecoline.
From 'areca' + '-olin' (chemical suffix). An older nomenclature variant for what is now standardly called arecoline.
Arecolin is essentially the same compound as arecoline, but the older name appears in 19th-century pharmacy and medical texts—nomenclature standardization was a huge effort in 20th-century science!
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