Background: A herbal medicinal product (HMP) with centaury, lovage, and rosemary as active ingredients (brand name: Canephron® N) has been widely used for treatment and prevention of urinary tract infections (UTIs) and other urinary system disorders. Non-clinical in vitro and in vivo data indicate its diuretic, spasmolytic, anti-inflammatory, antioxidative and analgesic effects. The purpose of this non-interventional, prospective, multicenter study was to collect data on the use of the HMP in the Russian pediatric outpatient population. Results: In total, 636 outpatients aged 1-17 years were enrolled. Of these, 634 received at least one dose of the HMP and were included in the safety set, which was used for analysis. 61 patients were 12-23 months, 227 were 2-5 years, 234 were 6-11 years and 112 were 12-17 years of age. The oral solution of the HMP was prescribed in 66.4%, and tablets (dragées) in 33.6% of the patients. For 48% of the patients the HMP was prescribed to treat an acute or chronic disease, 25% of the patients received it for prophylaxis, and 27% for both. More than half of the patients (53%) received the HMP as monotherapy. Main treatment indications were UTIs (34.1%) and pyelonephritis (30.0%). The proportion of UTIs was the highest within the youngest age group (51%), while the proportion of different cystitis forms increased in patients older than 2 years. Relevant proportions of different nephritis forms and urolithiasis were only observed in patients aged 12-17 years. Forms of cystitis were more frequent in female than in male patients (15% vs. 1%), while forms of nephritis, urolithiasis, and dysmetabolic nephropathy / crystalluria were more frequent in male patients. At the end of the observational period, 20% of the patients were reported as recovered from their disease, and 65% were reported to show improvements. For 91% of all patients with HMP monotherapy the investigators evaluated the effectiveness of the HMP as 'good' or 'very good'. Nearly all patients (99%) evaluated the tolerability as 'good'or 'very good'. Five adverse drug reactions were observed. Conclusions: The treatment of children aged 1-17 years with the HMP is safe and well tolerated. The study results support the use of the HMP for treatment and prophylaxis of urinary system diseases.