Margarita Co. Oral Liquid is Prepared from several tonic traditional medicines such as Margarita Rhizoma Polygonati, Fruetus Lycii, Radix Pdygoni Multiflori, Radix Rehmannia Praeparata, etc. A clinical trial on 144 cases showed that this Preparation can tonify liver and kidney, nourish blood and retard aging. It is effective for deficiency of liver and kidney, manifested as dizziness, amnesia and enuresis, debility after long illness, hypertension and hypercholesterolemia. The effective rate is 95.83％ for kidney deficiency, 71.47％ for hypercholesterolemia.