To facilitate timely removal of urinary catheters and promote self-voiding among inpatients, urinary care teams have been established in some Japanese medical institutions. However, direct evidence of the effectiveness of pharmacist intervention in urinary care teams is limited. We evaluated the efficacy of pharmaceutical support by a pharmacist in a urinary care team. Between September 2017 and August 2018, 84 patients met the criteria for initiating continuous intervention. Patients with (20 cases) and without (8 cases) adoption of pharmaceutical support (initiation or discontinuation of treatment for dysuria) were scored for urinary function (including degree of independence of urination and score of lower urinary tract disorder) and for urinary situation. Comparative analysis results showed that pharmacist intervention in the adoption cases resulted in significantly improved scores for urinary function than in non-adoption cases. Similarly, pharmaceutical support resulted in improved overall urinary situation in the patients (85.0% of adoption cases compared to 37.5% of the non-adoption cases). The most common pharmaceutical support was a recommendation to discontinue drugs that induce dysuria (65.0% of the cases). Taken together, our findings suggested that pharmacists are important members of urinary care teams.