Salvia, specifically referring to species such as Salvia officinalis (common sage) and Salvia miltiorrhiza (Danshen), has a long history of traditional use in various systems of medicine, including Traditional Chinese Medicine (TCM) and European herbalism. In these traditions, certain Salvia species have been employed to support relaxation, reduce anxiety, and occasionally to promote sleep or address insomnia-like symptoms. The rationale for their use is typically based on their purported calming and sedative properties, as well as their effects on the nervous system.

However, direct scientific evidence supporting the efficacy of Salvia species for treating insomnia is limited. Most modern research on Salvia focuses on its cognitive effects, antioxidant activity, and potential cardiovascular or neuroprotective benefits. There are a small number of preclinical studies and anecdotal reports suggesting mild sedative or anxiolytic effects, but robust clinical trials specifically evaluating its use for insomnia are lacking. Thus, while Salvia's use for insomnia is justified by traditional use and some preliminary data, scientific validation remains minimal.

It is important to note that some Salvia species, such as Salvia divinorum, have psychoactive properties but are not traditionally used for insomnia and are not recommended for this purpose.