Hello, maca powder has the function of increasing resistance and restoring physical strength. It's hard to say whether it has the function of tonifying kidney. Polygonatum mainly nourishes kidney yin. It is recommended to slowly tonify the kidney according to your age, and don't worry. You can use medlar, jujube, American ginseng and other soaking water instead of tea. Pay attention to the routine at ordinary times and don't stay up late. That's all that matters. You can take Liuwei Dihuang Pill as health care, and take yin for yang.