Dietary Supplement Powder Urinary Tract Health Discussion: Solaray D-Mannose with CranActin Powder offers two grams of D-Mannose plus 400 mg of CranActin in a great-tasting powder. D-Mannose is a natural sugar that has been studied for its potential ability to support a normal, healthy urinary tract. CranActin Cranberry AF extract has been added to create the ultimate bacterial anti-adherence formula!