Six Ingredient Pill with Rehmannia or Liu Wei Di Huang Wan is a classic formula for addressing low back needs, ongoing headaches, ringing in the ears, and the various symptoms of “low-grade heat”. According to Chinese medicine, this formula “supplements Liver and Kidney yin” Six Ingredient Pill with Rehmannia is great for: Supporting low back needs and strength Eases headaches and ringing in the ears Heat in the night, hot flashes, warm palms and soles Dry throat and thirst.