For a quick low blood sugar fix, you need 15 grams of fast-acting carbohydrates: four glucose tablets, half a cup of fruit juice, or a tablespoon of honey. These raise your blood sugar within minutes, and the approach works whether you’re managing diabetes or experiencing an occasional drop. What you take depends on how severe the episode is and whether low blood sugar is a recurring problem for you.
The 15-15 Rule for Immediate Treatment
The standard approach for treating a blood sugar level below 70 mg/dL is called the 15-15 rule. You eat or drink 15 grams of fast-acting carbohydrates, wait 15 minutes, then recheck your blood sugar. If it’s still under 70 mg/dL, you repeat the process until your levels return to your target range.
The key word here is “fast-acting.” You want carbohydrates that your body can absorb quickly, without fat, protein, or fiber slowing things down. That’s why a candy bar or a slice of pizza won’t work well in the moment. The fat in those foods delays digestion, meaning your blood sugar stays low longer than it needs to. Stick with simple, quick sources:
- Glucose tablets (4 tablets): the most precise option since each tablet contains a measured amount of glucose
- Fruit juice (half a cup / 4 oz): orange or apple juice works well
- Regular soda (half a cup / 4 oz): not diet, which has no sugar
- Honey or table sugar (1 tablespoon)
- Hard candies: check the label for 15 grams of sugar
Young children typically need less than 15 grams per round, especially infants and toddlers. A pediatrician can give you the right amount for your child’s age and weight.
What to Eat After Your Levels Come Back Up
Once your blood sugar is back in a normal range, you’re not done. Fast-acting carbs raise your levels quickly, but they also burn off quickly. Without a follow-up snack, your blood sugar can drop again within an hour or two.
The goal is to eat something that combines protein with complex carbohydrates. Protein slows digestion, and complex carbs release glucose more gradually, keeping your levels stable for longer. Good pairings include peanut butter on whole grain crackers, cheese with a piece of fruit, eggs and toast, or a handful of nuts with a banana. If your next full meal is more than an hour away, this follow-up snack is especially important.
Emergency Glucagon for Severe Episodes
Sometimes low blood sugar becomes severe enough that a person can’t eat or drink safely. If someone is unconscious, having a seizure, or unable to swallow, oral carbohydrates aren’t an option. This is where glucagon comes in.
Glucagon is a hormone that triggers your liver to release stored glucose into the bloodstream, raising blood sugar rapidly. It’s available as a prescription in several forms designed for emergency use by family members, caregivers, or coworkers:
- Nasal spray (Baqsimi): a dry powder sprayed into one nostril, no injection needed. Approved for ages 4 and up.
- Pre-filled auto-injectors (Gvoke HypoPen): works like an EpiPen. You press it against the thigh or upper arm. Approved for ages 2 and up.
- Ready-to-use syringes (Gvoke PFS, Zegalogue): pre-mixed and ready to inject, with Zegalogue raising blood sugar in roughly 10 minutes.
- Glucagon Emergency Kit: a traditional kit that requires mixing powder with liquid before injecting. Still widely available but takes more steps under pressure.
If you take insulin or a medication that can cause severe lows, keeping one of these on hand is worth discussing with your doctor. Make sure the people around you know where it is and how to use it.
Managing Recurring Low Blood Sugar Without Diabetes
Not everyone who gets low blood sugar has diabetes. Reactive hypoglycemia causes blood sugar to drop in the two to four hours after eating, often after a meal high in refined carbs or sugar. The body overproduces insulin in response to a rapid blood sugar spike, then overshoots and sends levels too low.
The treatment strategy here is different from treating an acute episode. Instead of adding fast sugar, you’re restructuring your diet to prevent the spike-and-crash cycle in the first place. That means cutting back on the foods most likely to trigger it: white bread, white rice, white pasta, pastries, pancakes, candy, sweetened drinks, and table sugar. Alcohol can also be a trigger.
Replacing those with low glycemic index foods makes a significant difference. These are foods high in fiber, protein, and complex carbohydrates that release glucose slowly and steadily. Think whole grains, legumes, vegetables, nuts, and lean proteins. Eating smaller, more frequent meals rather than two or three large ones also helps keep blood sugar from swinging too dramatically in either direction.
When You Can’t Feel the Warning Signs
Some people, particularly those with long-standing diabetes who experience frequent lows, lose the ability to feel their blood sugar dropping. This condition is called impaired awareness of hypoglycemia. Normally your body sends clear signals: shakiness, sweating, a racing heart, confusion. With impaired awareness, those warning symptoms are blunted or absent, which means blood sugar can fall to dangerous levels before you realize anything is wrong.
This happens because repeated episodes of low blood sugar essentially recalibrate your body’s alarm system. The hormonal response that normally triggers those warning symptoms becomes weaker over time. Mistimed or imprecise insulin dosing increases the likelihood of these repeat episodes, which further dulls the response in a vicious cycle.
Managing impaired awareness involves several strategies layered together. Continuous glucose monitors that alert you when levels are dropping are one of the most effective tools, since they replace the internal warning system your body has lost. Structured education programs that help you recognize subtle early cues can also partially restore awareness. In some cases, simply avoiding all hypoglycemic episodes for a period of several weeks can help reset your body’s sensitivity to low blood sugar. For the most severe cases, pancreas or islet cell transplantation is an option, though it’s reserved for people who can’t achieve stability through other means.
If you’ve had episodes where your blood sugar dropped below 70 mg/dL without you noticing, bring it up with your care team. Questionnaires that assess your awareness level are a simple starting point, and they can guide decisions about adjusting your treatment plan or adding monitoring technology.