When your blood sugar drops below 70 mg/dL, you need fast-acting carbohydrates immediately, followed by a more balanced snack to keep levels stable. The standard approach is called the 15/15 rule: eat 15 grams of quick carbohydrates, wait 15 minutes, then check how you feel. If your blood sugar hasn’t improved, eat another 15 grams. What you eat after that initial fix matters just as much for preventing another drop.
Fast-Acting Foods for an Immediate Fix
The goal in the first few minutes is speed. You want something your body can convert to glucose almost instantly, which means simple sugars with no fat or protein slowing digestion down. Pure glucose has the highest possible glycemic index score (100 out of 100), so glucose tablets and glucose gels are the gold standard. They’re pre-portioned to deliver exactly 15 grams per serving, which removes any guesswork.
If you don’t have glucose tablets on hand, any of these will deliver roughly 15 grams of fast carbohydrates:
- 4 ounces (half a cup) of fruit juice
- A tablespoon of honey
- A small handful of Skittles, gumdrops, or Starbursts
- A small box of raisins
- 4 ounces of regular soda (not diet)
What you want to avoid here is anything with fat or protein mixed in. A chocolate bar, for instance, digests more slowly because of its fat content. Peanut butter crackers are a great stabilizing snack, but they’re too slow for the initial rescue. Speed is everything in the first 15 minutes.
What to Eat After Your Levels Come Back Up
Fast sugar fixes your blood sugar quickly, but it drops off quickly too. Once you’ve treated the immediate low and your levels are coming back into a safe range, eat a follow-up snack that combines about 15 grams of carbohydrates with protein or healthy fat. This pairing slows digestion and creates a more gradual, sustained release of glucose instead of another spike and crash.
Some practical combinations that work well:
- Half a sandwich with meat, cheese, or peanut butter
- A small piece of fruit with an ounce of cheese
- 8 animal crackers with 2 tablespoons of peanut butter
- 6 saltine crackers with a quarter cup of tuna salad
- 55 Goldfish crackers with an ounce of cheese
- 3 cups of plain popcorn with an ounce of nuts
- 15 to 20 baked tortilla chips with refried beans
The pattern is simple: a moderate amount of carbs paired with something that has protein, fat, or both. This is the snack that actually keeps you stable for the next couple of hours.
Portable Options to Keep on Hand
Low blood sugar doesn’t wait until you’re near a kitchen. Keeping shelf-stable options in your bag, car, desk, or gym bag means you’re never caught without a fix. Glucose tablets and glucose gel are the most reliable because they’re designed for this exact purpose, don’t melt, and won’t expire quickly. Glucose gummies work the same way.
Other portable options include small juice boxes (two 6-ounce boxes provide about 16 grams of carbs), individual honey packets, dried fruit like prunes or dried apricots, and small bags of raisins. For the follow-up snack, trail mix with nuts and dried fruit covers both the carbohydrate and protein components in one package. A granola bar with around 15 to 16 grams of carbs is another easy option to stash somewhere.
Eating to Prevent Low Blood Sugar
If you find yourself dealing with blood sugar drops regularly, especially a few hours after meals, your overall eating pattern likely needs adjusting. This is particularly true for people with reactive hypoglycemia, where blood sugar crashes after eating foods that spike it too quickly.
The core strategy is shifting toward low glycemic index foods. These are complex carbohydrates that are high in fiber and protein, and they create a gradual rise and gradual fall in blood sugar instead of a sharp spike followed by a crash. Good staples include brown or wild rice, quinoa, oatmeal, beans, and most non-starchy vegetables. Black beans, chickpeas, and bean-based pastas are especially useful because they deliver fiber and protein together. Cruciferous vegetables like broccoli, Brussels sprouts, cabbage, and cauliflower are very high in fiber and can be eaten freely.
Pairing carbohydrates with protein and healthy fat at every meal is one of the most effective habits you can build. Adding nuts, eggs, lean meat, fish, tofu, Greek yogurt, or cottage cheese to meals slows your body’s digestion of the carbohydrates and prevents the blood sugar spike that leads to a later crash. Cooking with olive oil or avocado oil adds healthy fat that serves the same stabilizing purpose. Nuts are a particularly efficient snack because many varieties contain carbohydrates, protein, and fat all in one.
Eating smaller meals or snacks every two to four hours, rather than relying on three large meals, also helps keep levels steady throughout the day. Alcohol and high-sugar foods are common triggers for drops, so if you do drink, eating food at the same time buffers the effect.
Foods That Tend to Cause Crashes
Simple carbohydrates break down to sugar almost immediately, which is exactly what makes them useful during a low but problematic as regular meals. White rice, white pasta, white bread, potatoes, cake, pastries, pancakes, candy, sweetened drinks, and honey all fall into this category. Starchy vegetables like corn and peas are better limited in portion size. Replacing these with their complex carbohydrate equivalents (brown rice for white, whole grain bread for white, sweet potatoes for regular) can make a noticeable difference in how stable your blood sugar stays between meals.
Bedtime Snacks to Prevent Overnight Drops
Blood sugar can drop during the night, especially if you take insulin or certain diabetes medications. A small bedtime snack that’s high in protein or fiber helps maintain levels while you sleep. Good options include a light cheese stick, a tablespoon of peanut butter with celery, a hard-boiled egg, Greek yogurt, or a small salad with a dash of oil and vinegar. These are deliberately low in carbohydrates because you’re not treating an active low. You’re providing a slow, steady fuel source to carry you through several hours of fasting.
When Food Isn’t Enough
Blood sugar below 54 mg/dL is considered severely low. At this level, symptoms can escalate to confusion, inability to eat safely, seizures, or loss of consciousness. If someone is too disoriented to chew and swallow, giving them food or drink creates a choking risk. This is when injectable or nasal glucagon, a prescription emergency medication, becomes necessary. If you take insulin, keeping a glucagon kit accessible and making sure the people around you know how to use it is an important safety measure.