Direct answer: Low blood sugar (hypoglycemia) is treated quickly with fast- acting carbohydrates to raise blood glucose, followed by a longer-lasting snack or meal. If symptoms are severe or the person cannot swallow, seek urgent help. What to do now

• If you are experiencing symptoms or monitoring someone with suspected low blood sugar, check blood glucose if you have a meter. If it’s below 70 mg/dL (3.9 mmol/L), treat with fast-acting carbohydrates right away.
• Quick-acting options (about 15 grams of carbohydrate):
  • 4–6 ounces (120–180 mL) of fruit juice or regular (non-diet) soda
  • 1 tablespoon of sugar, honey, or syrup
  • 4 glucose tablets or 1 tube glucose gel
  • 5 large jellybeans, 15 Skittles, or similar sugar-containing sweets
  • 1 small banana or half an apple (in some cases, depending on size and needs)
• After 15 minutes, recheck blood glucose. If still below 70 mg/dL, repeat the quick-acting carbohydrate amount once.
• Once blood glucose is above 70 mg/dL, eat a longer-lasting snack or meal to maintain levels, such as crackers with cheese, a sandwich, or yogurt with some fruit, especially if a meal is due.
• If the person is unconscious or unable to swallow:
  • Do not give food or drink.
  • Call emergency services immediately if you cannot administer rapid treatment right away.
  • If a glucagon kit is available and you know how to use it, administer according to instructions, then wait for help.

How to prevent future lows

• Plan regular meals and snacks that include a balance of carbohydrates, protein, and fat.
• Carry quick-acting carbs with you at all times (glucose tablets, candy, juice).
• Check blood sugar before activities that may affect it (exercise, travel, alcohol).
• If using insulin or certain diabetes medications, review dosing with a healthcare provider to reduce risk of lows.

Important notes

• The 15/15 rule is a common guidance: 15 grams of fast-acting carbohydrate, wait 15 minutes, recheck, repeat if needed, then follow with a longer-lasting snack or meal.
• Foods high in fiber or fat can slow glucose absorption, so prioritize simple sugars for rapid relief, then add protein or complex carbohydrates after the glucose rises.
• Seek medical advice if lows occur frequently, if you’re unsure how many grams you need, or if you have any concerning symptoms.

If you want, I can tailor these actions to your age, whether you have diabetes, any medications you’re on, and what quick-sugar items you have on hand.