Topic overview

Start with the big picture

The lesson compares three high-risk plants by toxic principle and mechanism: aconite alkaloids affect voltage-gated sodium channels, belladonna tropane alkaloids block muscarinic receptors, and digitalis glycosides inhibit Na⁺/K⁺-ATPase. These mechanisms help explain their differing clinical syndromes, including aconite-associated tingling and gastrointestinal symptoms, belladonna’s anticholinergic features, and digitalis-related gastrointestinal, visual, and rhythm disturbances. The topic also addresses diagnostic and forensic considerations, interactions and factors that can worsen digitalis toxicity, and broad management principles. Plant-identification errors are an important prevention concern. This preview introduces the comparisons; the full lesson develops the mechanisms, clinical features, and public-health context in greater depth.