Suddenly shaky? Sweaty? Hungry, weak, dizzy, or unable to concentrate?
When your energy seems to disappear out of nowhere, you may wonder, “What should I eat for a blood sugar crash?”
The answer depends on whether you are experiencing true low blood sugar (hypoglycemia) or simply feeling tired after eating.
If your blood glucose is actually low—generally below 70 mg/dL (3.9 mmol/L)—you need a source of carbohydrate that can raise glucose quickly. The American Diabetes Association recommends the 15-15 rule for many people: consume 15 grams of fast-acting carbohydrate, wait 15 minutes, and check again.
Let's look at what you can eat, what to avoid during an actual low, and what to eat afterward.
What Does a Blood Sugar Crash Mean?
“Blood sugar crash” isn't a formal medical diagnosis. People often use the phrase to describe symptoms associated with a rapid fall in blood glucose.
Common symptoms may include:
Shaking
Sweating
Sudden hunger
Weakness
Dizziness
Irritability
Anxiety
Headache
Difficulty concentrating
Confusion
These symptoms can have other causes, too. If possible, check your blood glucose rather than assuming every energy dip is hypoglycemia.
What to Eat for a Blood Sugar Crash
If your blood glucose is below 70 mg/dL, or your healthcare professional has instructed you to treat suspected lows, choose fast-acting carbohydrates.
These foods are designed to raise blood glucose quickly.
1. Glucose Tablets
Glucose tablets are one of the easiest options.
They are specifically designed to treat low blood glucose, and you can carry them in a purse, backpack, desk drawer, or car.
Follow the package instructions to get approximately 15 grams of carbohydrate. The ADA commonly lists about 3–4 tablets depending on the product.
Why they're useful: The amount of carbohydrate is clearly labeled and easy to measure.
2. Fruit Juice
A small serving of regular fruit juice can work quickly.
The CDC and ADA commonly recommend ½ cup (4 ounces) of juice as an example of approximately 15 grams of fast-acting carbohydrate.
Orange, apple, or grape juice can be convenient choices.
Important: This is different from drinking a large glass of juice as a regular beverage.
3. Regular Soda
If you have a low, regular soda—not diet soda— can provide rapidly available carbohydrate.
About ½ cup (4 ounces) is commonly used as an example of approximately 15 grams of carbohydrate.
Measure the amount rather than drinking an entire can or bottle.
4. Glucose Gel
Glucose gel is another convenient option.
It is formulated specifically for treating low blood glucose and is often packaged in individual tubes.
Follow the product directions for the appropriate amount.
5. Honey
A tablespoon of honey is another option listed by the ADA and CDC for providing roughly 15 grams of carbohydrate.
Keep in mind that honey is a treatment for a low—not something you need to consume routinely whenever you feel tired.
6. Sugar
Plain table sugar can also be used when appropriate.
The ADA lists 1 tablespoon of sugar as an example of approximately 15 grams of fast-acting carbohydrate.
This can be useful when glucose tablets or juice aren't available.
7. Hard Candy
Hard candies or jellybeans can provide fast carbohydrate.
The important part is checking the nutrition label because the number of candies needed to provide approximately 15 grams varies by product.
8. Fruit Snacks
Some fruit snacks can provide rapidly absorbed carbohydrates.
Again, check the nutrition label rather than guessing the portion.
The goal is to consume an appropriate amount of fast-acting carbohydrate, not simply eat an entire packet.
What Should You Eat After Your Blood Sugar Comes Back Up?
This is where many people make a mistake.
Fast-acting carbohydrates are useful for correcting the low, but they may not keep your glucose stable for very long.
Once your blood glucose has returned to your target range—or is trending upward—and your next meal isn't soon, the ADA recommends considering a snack containing carbohydrate and protein, such as cheese and crackers.
Other examples may include:
Whole-grain crackers with cheese
Apple with a small amount of peanut butter
Greek yogurt with fruit
Whole-grain toast with an egg
A small sandwich
The best choice depends on your overall diet, diabetes treatment plan, and timing of your next meal.
Foods That Are NOT the Best First Choice During a True Low
Here's a surprising point:
Chocolate isn't an ideal first treatment for hypoglycemia.
Why?
Foods high in fat can slow the absorption of carbohydrates. The ADA specifically notes that foods such as chocolate and peanut butter aren't the best choices for treating an immediate low.
Similarly, high-fiber foods, such as beans or some whole fruits, may not raise glucose as rapidly as a fast-acting carbohydrate.
These foods can still be nutritious parts of your regular diet. They're simply not the first choice when you need to raise low blood glucose quickly.
What About Bananas, Apples, or Other Fruit?
Fruit contains carbohydrate and can be part of a healthy eating pattern.
However, when treating an immediate low, fast-acting carbohydrate is generally preferred because fiber and other components can slow glucose absorption.
Once the low has been corrected, fruit can be paired with a protein-containing food for a more balanced snack.
For example:
Apple + cheese
or
Banana + plain Greek yogurt
The 15-15 Rule: Remember This Simple Formula
If you have confirmed low blood glucose and you're awake and able to swallow safely:
15 grams → Wait 15 minutes → Check again
If your glucose is still below 70 mg/dL, the ADA recommends repeating the treatment with another 15 grams of fast-acting carbohydrate.
If you're using a continuous glucose monitor, follow your diabetes care team's instructions regarding readings and trends.
Individual treatment plans can differ, particularly for children and people using automated insulin-delivery systems.
What If You Don't Have a Glucose Meter?
If you're at risk for hypoglycemia and cannot check your glucose, follow the treatment plan given to you by your healthcare professional.
People who are prone to low blood glucose are generally advised to keep a fast-acting carbohydrate source available.
But repeated unexplained “crashes” should not simply be treated with sugar over and over.
If you frequently experience shakiness, sweating, dizziness, extreme hunger, confusion, or weakness, talk with a healthcare professional to determine why it is happening.
What About a Sugar Crash After Eating a High-Carb Meal?
This is different.
You might eat a large meal containing refined carbohydrates and then feel sleepy, sluggish, or hungry again later.
That does not automatically mean you have hypoglycemia.
Instead of repeatedly reaching for candy, try building future meals around:
Protein + fiber-rich carbohydrate + vegetables + healthy fats
For example:
Breakfast
Eggs + whole-grain toast + berries
Lunch
Chicken + vegetables + brown rice
Snack
Greek yogurt + berries + nuts
Dinner
Lentils + vegetables + whole-grain roti
These combinations can provide more nutritional balance than relying heavily on sugary foods.
5 Mistakes to Avoid During a Blood Sugar Crash
Mistake #1: Eating a huge amount of sugar
More isn't necessarily better.
Following a measured treatment approach can help you avoid swinging from low blood glucose to unnecessarily high blood glucose.
Mistake #2: Choosing chocolate first
Chocolate contains fat, which can slow carbohydrate absorption.
Mistake #3: Exercising while you're low
Physical activity can make hypoglycemia worse in people who are susceptible to it.
Treat the low first and follow your healthcare professional's exercise instructions.
Mistake #4: Ignoring repeated episodes
Frequent lows can sometimes indicate that medication, food intake, exercise, or another factor needs attention.
Mistake #5: Assuming every energy crash is hypoglycemia
Tiredness can come from poor sleep, dehydration, stress, inadequate food intake, illness, and many other causes.
When Is a Blood Sugar Crash an Emergency?
Severe hypoglycemia can become dangerous.
If someone becomes confused, has a seizure, loses consciousness, or cannot safely swallow, do not give them food or drink by mouth.
Severe hypoglycemia may require glucagon and emergency medical assistance.
If you are with someone who is unconscious and glucagon is unavailable or you don't know how to use it, seek emergency help immediately.
A Simple Blood Sugar Crash Food List
For quick reference:
Fast-acting options for a confirmed low:
Glucose tablets
Glucose gel
½ cup fruit juice
½ cup regular soda
1 tablespoon honey
1 tablespoon sugar
Properly measured hard candy or jellybeans
These are examples used by major diabetes organizations for providing approximately 15 grams of fast-acting carbohydrate.
After the low is corrected, when appropriate:
Cheese + crackers
Greek yogurt + fruit
Apple + peanut butter
Egg + whole-grain toast
Small sandwich
Final Thoughts
So, what should you eat for a blood sugar crash?
If you're experiencing true low blood sugar, don't start with a high-protein snack or a handful of nuts. You need a rapidly absorbed carbohydrate source.
Think:
Glucose tablets → juice → regular soda → glucose gel → measured sugar or honey.
Then remember the simple 15-15 rule: approximately 15 grams of fast-acting carbohydrate, wait 15 minutes, and recheck your glucose.
Once the low is corrected, a balanced carbohydrate-and-protein snack may help if your next meal isn't soon.
And if “blood sugar crashes” keep happening, don't just keep treating the symptoms. Find out why they're happening.
Medical Disclaimer
This article is for general educational purposes and does not replace individualized medical advice. If you have diabetes, use insulin or other glucose-lowering medication, or experience repeated episodes of suspected hypoglycemia, speak with your healthcare professional. For severe symptoms such as seizures, loss of consciousness, or inability to swallow safely, seek emergency medical assistance.
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