Unda #45 is a homeopathic remedy that is used to relieve minor discomfort in urination. Not only does the unique herbal and mineral blend in Unda #45 provide relief from UTI's it also provides relief from Kidney stones. Unda #45 contains Uva-Ursi, yarrow extract, dulcamara, and horsertail. Urva-Ursi is often used in traditional medicine to help sooth symptoms associated with mild urinary tract infections while dulcamara extract may help provide mild relief from inflammation discomfort in the bladder. Horsetail is often recommended to help support your body's natural removal of kidney stones.