Support a well-balanced diet with D-mannose - a naturally occurring simple sugar that is only metabolized in small amounts. Suitable for vegetarians, each capsule from Now Foods contains 500mg of D-mannose. Support a well-balanced diet with D-mannose - a naturally occurring simple sugar that is only metabolized in small amounts. Suitable for vegetarians, each capsule from Now Foods contains 500mg of D-mannose. 0mg of D-mannose per capsule. Suitable for vegetarians. 120 veggie capsules per pack D-mannose is a simple sugar produced naturally in the body and in certain fruits like cranberries. Buy today.