You can quickly get a lot of sugar by drinking 1/2 cup of orange juice, apple juice, or any other juice you like.
You should drink a half cup of regular soda, not diet soda, because you need the sugars and calories right now.
About 17 grams of sugar are in 1 tablespoon of honey, which is about the amount recommended by the 15-15 rule.
Keep a bottle of corn syrup in your cabinet. When your blood sugar is below 70 mg/dL, take 1 tablespoon of corn syrup. About 16 grams of sugar will come from this.
When your blood sugar is low, you want quick-absorbing carbs like the 12.5 grams in a tablespoon of white sugar.
Jelly beans are another quick way to get sugar, but the amount you need to eat depends on how big the beans are.
Hard candies like jolly ranchers can also raise low blood sugar. They need sugar, not sugar-free.