Which herb is commonly used to treat yin deficiency with insomnia?

• A. Yu Xing Cao
• B. Shi Hu
• C. Bai He
• D. Wu Jia Pi

Answer: (C)

When insomnia is caused by yin deficiency, the goal is to nourish yin and calm the mind so the spirit can settle. Lily bulb is a classic choice for this pattern because it directly nourishes yin in both the lungs and the heart, moistens dryness, and clears any underlying empty-heat. This helps steady the Shen and reduce the restlessness and irritability that often accompany yin-deficient insomnia. It’s gentle and commonly used for sleep disturbances tied to long-term yin deficiency, making it a go-to herb in this context. In contrast, herbs that clear heat or tonify yang don’t address the root issue of insufficient yin and moisture, so they’re less appropriate for this specific pattern.