Which herb is traditionally used for an older man with back pain, copious urine, weakness, and oozing chronic sores?

• A. Bu Gu Zhi
• B. Lu Rong
• C. Shu Di Huang
• D. Du Zhong

Answer: (B)

The main pattern here is kidney deficiency with jing (essence) depletion in an older person, presenting as back pain, urinary leakage (copious urine), weakness, and non-healing or oozing chronic sores. Lu Rong—deer velvet—is a premier herb for this pattern because it tonifies kidney yang and nourishes jing, strengthening the body’s foundation. By warming and supporting the kidneys, it helps relieve lower back pain and stop leakage symptoms, while also boosting overall vitality and aiding tissue repair, which explains why chronic sores heal more readily when this tonic is used.

Other herbs align more narrowly with parts of the pattern: for example, Bu Gu Zhi helps secure leakage but isn’t as broad-spectrum a tonic for aging deficiency; Shu Di Huang nourishes yin and blood but doesn’t address yang and essence to the same degree; Du Zhong supports the back but is less focused on essence depletion and wound healing. Lu Rong’s unique combination of kidney yang and jing tonification makes it the best fit for this constellation of signs.