Hi all - glucogel and alternatives are vile - but you can also get something called GSF-SYRUP on prescription. It is a mix of sucrose, fructose and glucose, is very fast acting and lasts a bit longer than glucose. It comes in Tropical flavour and is quite nice. It is in long foil sachets and you have to tear the end off - not half as convenient as those little bottles of Gluco Juice you get in Boots (my fave options, but horrendously expensive) but ok. However when out you need a plastic bag to throw away the sachets as they are uber-sticky, and wet wipes to clean off your hands!