Corn silk (Stigma maydis), with a rich content of active substances which help in the treatment of chronic cystitis and in the dissolution of kidney stones with phosphate, urate and carbonate content. How to use: A tablespoon of the crushed plant is poured into a container with a cup of water, boiled for 4-5 minutes and left to rest for 10 minutes. It is recommended to take 2-3 such doses a day.