Sarivan, also known as Tephrosia purpurea, is primarily utilized in traditional systems of medicine, such as Ayurveda and Unani, for various health conditions, including insomnia. In these traditions, Sarivan is reputed to possess calming and sedative properties, and it is sometimes included in polyherbal formulations aimed at promoting better sleep or alleviating nervousness. Classical Ayurvedic texts mention its use for balancing the mind and addressing sleep disturbances, often in combination with other herbs.

However, the direct scientific evidence supporting Sarivan's efficacy for insomnia is limited. While Tephrosia purpurea has been investigated for a range of pharmacological effects—such as anti-inflammatory, antioxidant, and hepatoprotective properties—there is a lack of robust modern clinical trials or preclinical studies specifically evaluating its use for insomnia or sleep disorders. Some animal studies have explored central nervous system effects, but findings are preliminary and not directly translatable to human insomnia treatment.

In summary, Sarivan's use for insomnia is justified by traditional practice rather than scientific validation. The evidence from historical medical systems is moderate, but contemporary research confirming its sedative or sleep-promoting effects is lacking.