D-Mannose is known as an effective natural option to help prevent urinary tract infections. Our Utiva D-Mannose provides convenient 500mg capsules which allow personalized doses of usually 1,000mg to 2,000mg daily. Although not backed by doctor guidelines, experience has ensured D-Mannose is recommended by healthcare practitioners to help stop Ecoli from sticking and causing infections. Size: 120 capsules per bottle Recommended Dose: Take 1-2 capsules once or twice a day about 30 minutes before a meal.