Quest® D-Mannose 500 mg is a naturally occurring simple sugar that can help to prevent and treat recurrent urinary tract infections (UTIs). This exclusive formula is recommended for people who experience frequent UTIs as an effective alternative to antibiotic treatment that won’t disrupt normal intestinal microflora. D-Mannose (from Beech wood and Birch wood) ......... 300 mg Cranberry (Vaccinium macrocarpon) dried fruit juice ........ 200 mg Non-medicinal Ingredients: Cellulose, magnesium stearate, silicon dioxide, calcium phosphate tribasic, maltodextrin, magnesium hydroxide, hypromellose. Adults take 2 capsules daily. Use for a minimum of four weeks to see beneficial effects.