Six Ingredient Pill with Rehmannia, based on the classic Traditional Chinese Medicine formula Liu Wei Di Huang Wan, is traditionally used to nourish and replenish Yin — particularly in the Kidney and Liver systems. According to Traditional Chinese Medicine theory, this herbal blend supports balance in the body when Yin becomes depleted, a pattern that may be reflected in feelings of internal heat, dryness, and fatigue. Six Ingredient Pill with Rehmannia is formulated to: Support Lower Back and Kidney system vitality (Traditional Chinese Medicine concepts) Promote internal balance and calm, especially at night Help maintain natural moisture and Yin balance Support the body in managing heat sensations