Ziziphus jujuba seeds are generally used. According to Li Shizhen's "Compendium of Materia Medica" in Ming Dynasty, jujube was used skillfully to treat gallbladder deficiency, insomnia, polydipsia and hyperhidrosis; You also need drugs to treat gallbladder fever and have a good sleep.
The production method is: harvesting mature fruits in late autumn and early winter, removing pulp, removing core, taking out seeds and drying in the sun. For reference only.