The drug composition, efficacy, main diseases and contraindications of the two are different. Pai Zi Zi Xin Wan consists of Pai Zi Ren, Xuan Shen, Radix Rehmanniae Praeparata, Fructus Lycii, Radix et Rhizoma Glycyrrhizae, Radix et Rhizoma Glycyrrhizae Praeparatae, Radix Angelicae Sinensis, Calamus, Ophiopogonis, Poria, with the efficacy of nourishing yin to nourish the heart and tranquillizing the mind and wisdom (stabilizing the mind and promoting intellectual development), it is mainly used for the heart and blood deficit, restlessness of mind and spirit, mental trance, night dreams, palpitations with anxiety (heartbeat is violent, panic and restlessness), amnesia, and ejaculation, and other diseases. The adverse effects of Pai Zi Zixin Pill are not clear, and should not be taken by patients with exogenous fever. Pai Zi Nourishing Heart Pill is composed of Pai Zi Ren, Semen Xie Qu, Rhizoma Ligustici Chuanxiong, Radix Angelicae Sinensis, Radix et Rhizoma Ginseng, Poria, Glycyrrhiza Uralensis, Astragalus Membranaceus, Cinnamon, Jujubae Fructus, Semen Ziziphi, Polygonatum odoratum, and Cinnabar, it has the efficacy of replenishing qi, nourishing blood, and tranquilizing the spirit, and it is mainly used for the diseases of deficiency of the heart qi and cold, palpitation (heartbeat accelerates, often accompanied with panic attacks) and panic attacks, insomnia with dream, and fatigue of God (lack of mental energy), amnesia, and other diseases. The adverse effects of Pai Zi Zhen Xin Wan are not clear, avoid eating spicy food during the medication. Both Pai Zi Zi Xin Wan and Pai Zi Nourishing Heart Pill have the effect of nourishing the heart and tranquilizing the mind (stabilizing the mind by nourishing the heart), but the former favors nourishing yin and tonifying the kidneys for people with yin deficiency of the heart and kidneys, while the latter favors tonifying qi and blood for people with cardiac insufficiency (insufficient blood to the heart). The above medicines are recommended to be used under the guidance of a professional physician, and should not be used blindly on one’s own.