Well it depends on how serious your blood sugars are.
Some women can control it by diet alone, ie I've cut out sugar, sweet things and have to lower all carbs in meals.
Some women can control it by having long acting insulin over night and diet control
And some women, like me, have to have, three sets of insulin injections a day and monitor diet as well.
I was going to say if you get to make the drink up at home, my m/w suggested making up night before and put it in fridge as it tastes better colder