Synopsis

Source of validity: Traditional
Rating (out of 5): 2

California poppy (Eschscholzia californica) has a long history of use in traditional herbal medicine as a mild sedative and anxiolytic. Historically, Native American groups in California used the plant for its calming effects, particularly for restlessness, anxiety, and as a sleep aid. Its traditional application is thought to relate to supporting the parasympathetic nervous system, which is involved in promoting relaxation and restorative processes in the body. Modern herbalists continue to use California poppy for similar purposes, such as supporting relaxation and sleep.

On a scientific level, a few animal and in vitro studies suggest that extracts from California poppy may interact with GABAergic and other neurotransmitter systems, potentially explaining its sedative and calming effects. However, clinical studies in humans are limited, with most evidence remaining anecdotal or extrapolated from animal models. There is insufficient direct clinical evidence to robustly support California poppy’s efficacy in supporting the parasympathetic nervous system specifically, though its traditional use for calming and relaxation may indirectly support parasympathetic activity.

In summary, the use of California poppy to support the parasympathetic nervous system is primarily justified by traditional use, with some preliminary scientific rationale but minimal direct clinical validation.

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