Granulated dietary supplement for the prophylaxis of urinary tract infections and as an adjunct to antibiotic treatment. Its formulation includes effective amounts of D-mannose and PAC, which complement each other in their mechanism of action to prevent the recurrence of urinary tract infections. It also includes ursolic acid, zinc, and vitamins A, C, and E to improve the symptoms of the infection. Manosar's controlled-release dosage form achieves effective and constant amounts of the formulation's components in urine over 24 hours with a single daily dose, which promotes patient adherence.