It is not true that Pai Zi Nourishing Heart Pill harms the kidneys, this product has no significant effect on the kidneys when taken under the guidance of a Chinese medicine practitioner for diagnosis. Pai Zi Nourishing Heart Pill is a proprietary Chinese medicine composed of Radix Astragali, Radix Codonopsis pilosulae, Radix Phellodendron Bidentatae, Rhizoma Ligustici Chuanxiong, Radix Angelicae Sinensis, Poria, and Radix et Rhizoma Polygoni Multiflori, which is known for tonifying the vital energy, nourishing the blood, and tranquilizing the mind, and it can be used for the treatment of deficiency of vital energy and coldness of heart, palpitations (accelerated heartbeat often accompanied by panic) and easy to be frightened, insomnia and dreaming, and forgetfulness. The adverse effects of this product are not clear at present. Note that this product is prohibited for those who are allergic to this product, and allergic individuals should be cautious. Avoid spicy, greasy, raw and cold food during the period of taking. Drug interactions may occur if this product is used concurrently with other drugs, please consult your physician or pharmacist for details. This product has no significant effect on the kidneys when taken under the guidance of a traditional Chinese medicine practitioner. If you need to use medication, you need to use it under the guidance of a traditional Chinese medicine practitioner, do not blindly use medication on your own to avoid causing adverse reactions.