When your blood sugar drops low, you need 15 grams of fast-acting carbohydrates right away. That means simple sugars your body can absorb quickly: half a cup of fruit juice, one tablespoon of honey, or a few glucose tablets. The goal is to get sugar into your bloodstream within minutes, then follow up with a balanced snack to keep your levels stable.
Best Foods to Raise Blood Sugar Fast
The fastest options are simple sugars in small, measured amounts. Each of these provides roughly 15 grams of carbohydrates:
- Half a cup (4 oz) of fruit juice such as orange or apple juice
- One tablespoon of honey, sugar, or syrup
- One cup of a sports drink
- Three to four glucose tablets (check the label for exact serving)
- A few hard candies like Lifesavers or jelly beans (about 15 grams’ worth)
Liquids tend to work faster than solid foods. Your stomach empties liquids more quickly, so a glass of juice or a spoonful of honey dissolved in water will hit your bloodstream sooner than chewing on crackers or candy. In studies comparing liquid glucose to solid food, blood sugar peaked roughly 30 minutes faster with the liquid form.
After eating or drinking your 15 grams, wait about 15 minutes and check your blood sugar again if you can. If it’s still low, repeat with another 15 grams. This is sometimes called the “15-15 rule,” and it prevents you from overcorrecting and spiking your sugar too high.
What Not to Eat During a Low
It’s tempting to grab chocolate, ice cream, or a peanut butter sandwich when you feel shaky and hungry, but these are poor choices for an acute low. Fat and fiber slow down how quickly your body absorbs carbohydrates. A chocolate bar, for instance, contains enough fat to delay sugar absorption significantly, which is the opposite of what you need when your blood sugar is dropping.
Save the high-fat and high-protein foods for after you’ve treated the immediate low. In the moment, stick with pure, simple carbohydrates that contain little or no fat, fiber, or protein.
What to Eat After Your Sugar Stabilizes
Once your blood sugar is back in a safe range, you’re not done. The fast-acting sugar you just consumed will burn off quickly, and without a follow-up snack, your blood sugar can drop again. The CDC recommends eating a balanced snack or small meal that combines protein with longer-acting carbohydrates. Good options include:
- Crackers with cheese
- A sandwich with meat
- Peanut butter on toast
- Yogurt with granola
The protein and complex carbs digest more slowly, providing a steady release of glucose that keeps your levels from crashing a second time. If your next regular meal is more than an hour away, this follow-up snack is especially important.
How to Recognize Low Blood Sugar
Knowing what to eat only helps if you catch the low early. The first signs are usually physical: shakiness, sweating, a fast heartbeat, sudden hunger, and feeling anxious or irritable for no clear reason. Some people notice tingling or numbness in their lips, tongue, or cheeks, or have trouble concentrating.
As blood sugar continues to fall, symptoms get more serious. You might feel weak, have blurry vision, slur your words, or behave in ways that seem unusual to people around you. Severe low blood sugar, defined as below 54 mg/dL, can cause you to pass out or have seizures.
One important thing to know: some people, especially those who have frequent lows, can develop what’s called hypoglycemia unawareness. Their body stops producing the early warning signs like shakiness and a racing heart. If you’ve noticed that lows seem to sneak up on you without warning, that’s worth discussing with your care team, because it changes how aggressively you need to monitor.
When Food Isn’t Enough
If someone with low blood sugar is unconscious, confused to the point where they can’t swallow safely, or having a seizure, do not try to put food or liquid in their mouth. This is a choking risk. These situations call for glucagon, a hormone that signals the liver to release stored sugar. Glucagon is available as an injection or a nasal spray that can be given even when the person is unresponsive. If glucagon isn’t available, call emergency services immediately.
For anyone who uses insulin or takes medications that can cause lows, keeping a glucagon kit accessible and making sure the people around you know how to use it can be genuinely lifesaving. The nasal spray version requires no mixing or injection, which makes it practical for family members, coworkers, or friends who may need to help in an emergency.
Keeping Quick Fixes Within Reach
Lows don’t always happen at convenient times. Keeping glucose tablets in your bag, a juice box in your desk drawer, and honey packets in your car means you’re never caught without a fast option. Glucose tablets have the advantage of being shelf-stable, portable, and pre-measured so you don’t have to estimate portion sizes when you’re already feeling shaky and unfocused. Small tubes of cake frosting or gel are another compact option that won’t spill or expire quickly.
If you experience lows regularly, tracking when they happen (after exercise, overnight, between meals) can help you and your care team identify patterns and adjust your approach before the next one hits.