Table 2 Characteristics of the Investigational Product

Study drug: Qiliqiangxin Capsule (芪苈强心胶囊)

-Ingredients: Astragalus, Ginseng, Monkshood, Danshen, Pepperweed Seed, Rhizoma Alismatis, Radix Polygonati Officinalis, Cassia Twig, Red Flower, Cortex Periplocae, Tangerine Peel

-Property: Capsule; the contents are brown to black brown granules; bitter in taste;

-Specification: 0.3 g/granule

-Bach number: GYZZ Z20040141

-Manufacturer: Shijiazhuang Yiling Pharmaceutical Co., Ltd.

Placebo: Qiliqiangxin Matching Placebo

-With identical color, specification, packaging, property of contents and other features with Qiliqiangxin Capsule