Dicentrine is an alkaloid-enriched fraction and the primary alkaloid of the leaves of Ocotea puberula (Lauraceae), a native Brazilian plant traditionally used by Indigenous populations for skin affections, and dicentrine further demonstrates pharmacological activity as an α1-adrenoceptor antagonist in human hyperplastic prostate tissue. Dicentrine has been evaluated using radioligand binding assays with [3H]prazosin and in vitro isometric tension experiments, confirming functional α1-adrenoceptor involvement and supporting therapeutic relevance in disorders associated with prostate hyperplasia.