What is the difference between Radix Polygoni Multiflori Preparata and Radix Polygoni Multiflori?

Polygonum multiflorum Thunb. Processed as needed to reduce the toxicity of Polygonum multiflorum Thunb. And change its medicinal properties, thus producing different therapeutic purposes and effects. Polygonum multiflorum Thunb. He is good at nourishing liver and kidney, nourishing essence and blood, blackening hair, treating blood deficiency and sallow, insomnia and forgetfulness. He is often used with Radix Rehmanniae Preparata, Radix Angelicae Sinensis and Semen Ziziphi Spinosae. This product is used together with Angelica sinensis, Fructus Lycii and Semen Cuscutae for treating deficiency of essence and blood, backache and dizziness. Mulberry, black sesame, Eucommia ulmoides, etc. It is often used to treat liver and kidney deficiency, soreness of waist and knees, dizziness, tinnitus and deafness. Such as Polygonum multiflorum Thunb. Shouwu Yanshou Dan has the effects of stopping malaria, detoxicating and relaxing bowels. If malaria lasts for a long time and qi and blood are weak, Polygonum multiflorum Thunb will be born. It can be used with ginseng, angelica, dried tangerine peel and stewed ginger, so you can drink whatever you want (Jingyue Quanshu). If you have scrofula and itchy skin, you can use Prunella vulgaris, Fritillaria thunbergii and Angelica sinensis (Herbal Yan Hui); It can also be used with Radix Saposhnikoviae, Radix Sophorae Flavescentis and Herba Menthae to treat systemic sores, swelling, itching and pain, and how to disperse Polygoni Multiflori Radix (operation essentials); For the elderly and infirm with constipation due to blood deficiency, it can moisten the intestines to relieve constipation. Equivalent to Cistanche deserticola, Angelica sinensis and cannabis.