d-Tetrahydropalmatine is widely used in traditional Chinese medicine for its analgesic and sedative properties. It is commonly applied to alleviate pain, particularly in cases of headaches, menstrual pain, and abdominal discomfort. Additionally, it is utilized to promote relaxation and improve sleep quality, making it beneficial for individuals suffering from insomnia or anxiety-related sleep disorders. Its ability to regulate dopamine levels also makes it a potential candidate for managing certain neurological conditions, such as addiction and mood disorders. Furthermore, it has been explored for its anti-inflammatory and anti-hypertensive effects, contributing to its use in cardiovascular health management.