How to log carbss in VitaFiber (UK)

Has anyone tried VitaFiber?

http://www.musclefood.com/vitafiber-sweetner-700ml.html/

Can anyone confirm how log the carbs in My Fitness Pal.

The description says it's 90% fiber, the nutritional label looks to be U.S. i.e fiber is included in the carb total but some is listed as digestible. UK labels show Fiber as a separate entry so my macros are based on carbs that aren't fiber.

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