There doesn't seem to be anything in there that can't be achieved for less money with dextrose and CaraPils.
My experience with Munton's Carbtabs, which seem to be pretty much the same thing, has been pretty negative: Slow carbonation and lots of floaties in the beer.
The Fiesty(sic) Goat Brewery est. 2007 & Clusterfuggle Experimental Ales est. 2009
Planned: sLambic II, Flanders Red II, Orange Blossom Mead, Fat Man Porter
Primary:sLambic I, Janet's Brown
Secondary: Toasted Caramel Port, Flanders Red
Kegged: Hefeweizen, Centurion Falcon IPA< Dark Saison
2013 dump volume: ~2 gallons