Taking Four Substances Soup and Pai Zi Nourishing Heart Pill together does not cause side effects between the drugs. The combination of the two is mostly suitable for people with weak qi and blood, and palpitations (rapid heartbeat, often accompanied by panic attacks) due to deficiency of qi and blood, and is not suitable for everyone. Four Substances Soup is a basic formula for tonifying blood, consisting of Radix Rehmanniae Praeparata, Radix Angelicae Sinensis, Radix Paeoniae Alba and Rhizoma Ligustici Chuanxiong, which has the effect of tonifying blood and regulating menstruation, treating palpitations and irregular menstruation caused by deficiency of qi and blood. Pai Zi Nourishing Heart Pill is composed of Radix Phellodendron Bidentatae, Radix Codonopsis Pilosulae, Rhizoma Ligustici Chuanxiong, Poria, Radix Jujubae Sourifoliae and Rhizoma Polygoni Multiflori, which have the effects of nourishing Blood to tranquilize the spirit (stabilizing the spirit and soothing the emotions by nourishing the blood) and tonifying Qi. The combination of the two does not produce side effects in terms of drug composition. Combined, Si Wu Tang and Pai Zi Nourishing Heart Pill have the effects of tonifying Qi and Blood, regulating Blood and tranquilizing the mind, and can treat palpitations, timidity and insomnia caused by deficiency of Qi and Blood. It can be used under medical supervision by those who fulfill the relevant conditions and is not suitable for all. There is no significant adverse reaction to the above medication. It is contraindicated in people who are allergic to the ingredients, and should be used with caution in people who suffer from solid symptoms, hyperthermia of the liver, and pregnant women. When using the medication, it is important to adjust the work routine and reduce the number of late nights. Patients should follow the instructions of professional doctors and standardize the use of medication.