Goshajinkigan, an ingredient in Rohto Toyrhythm, is a traditional Chinese medicine that combines 10 kinds of herbal ingredients, including Aconite, Rehmannia, Poria, and Alisma.
It helps the kidneys, which are involved in water metabolism, and also warms the body, improves blood circulation, and is effective for frequent urination and difficulty urinating in people who tire easily and feel cold easily.