The advice from the “ professionals” where I am recommend the 15 , 15, 15 rule for hypos , that’s 15 g of fast acting carbs ! Wait 15 minutes , then 15 g of longer acting carbs , sounds feasible , but as we all know sometimes the real thing isn’t as easy, I will say I have tried it and it does work … sometimes , in answer to the original q, I use the mini cans of Coke Cola ! They contain exactly 15 g of fast acting carbs ! And there’s not a lot to drink ,and I’ve found personally it does raise my sugars really quickly! Which let’s face it is the most important thing , to be honest some hypos can be the contents of the fridge as one of my symptoms is incredible hunger ! And at that point in time I’m not bothered what my blood sugar is going to raise to I just treat it after , but generally I always take a long acting carb after a quick acting one as it doesn’t take long for the fast acting carb to disappear and I’m back in the same boat but as with diabetes tomorrow it could be different .