🍯 Low Blood Sugar (Hypoglycemia)
Recognize symptoms early, treat fast (15–15 rule), prevent future dips, and keep caregivers prepared. Designed for seniors and anyone using insulin or certain diabetes pills.
! Emergency signs — act now ▾
Call emergency services if the person is unconscious, having a seizure, cannot swallow, or cannot safely take sugar by mouth. If you have a prescribed glucagon product, use it as directed while someone calls for help.
- Severe confusion, slurred speech, or extreme sleepiness
- Seizure or loss of consciousness
- Very low meter/CGM reading and unable to take oral sugar
1 What counts as “low” and common symptoms ▾
Many clinicians treat <70 mg/dL (3.9 mmol/L) as low. Some older adults may use a slightly higher safety threshold if there’s fall risk or unawareness—confirm your personal plan.
| Body signal | Examples |
|---|---|
| Early | Shaky, sweaty, fast heartbeat, hungry, anxious |
| Thinking | Foggy, irritable, hard to focus, headache |
| Severe | Confusion, slurred speech, seizure, fainting |
2 Fast treatment: the 15–15 rule ▾
- Check your blood sugar (meter/CGM). If you can’t check but have clear symptoms, treat anyway.
- Take 15 grams of fast-acting carbohydrate: glucose tablets (per label), 4 oz (120 ml) regular soda or juice, or 1 tablespoon sugar/honey. Avoid chocolate/fat—works slower.
- Wait 15 minutes, recheck. If still low, take another 15 g and recheck.
- Once back to normal and the next meal is far away, eat a small snack with carb + protein (e.g., crackers + peanut butter) if your clinician advises.
3 Why lows happen (fix the root cause) â–ľ
- Meals: skipped/late meals, smaller portions than usual, vomiting/illness
- Activity: more walking or exercise than usual, yardwork, housework
- Medicines: insulin timing/dose mismatch; some pills (e.g., sulfonylureas) increase risk
- Alcohol: especially without food; lows may show up hours later overnight
- Kidney/liver issues: can change how long medicines last
4 Prevention (day & night) â–ľ
Daytime
- Eat on a steady schedule; keep a portable carb in your bag/pocket
- Match insulin/med timing to meals; verify dose with your plan
- Check before driving; if low, treat and wait until normal
Activity
- Carry quick sugar and ID
- For longer walks, plan a small carb beforehand if advised
- Check again after activity—lows can be delayed
Night
- Avoid heavy evening alcohol; take medicines exactly as prescribed
- Consider a small balanced snack if your clinician recommends
- Use CGM alerts if available; keep glucose tabs by the bed
5 Caregiver & family plan â–ľ
- Know where glucose tablets/gel and the glucagon are stored; learn how to use them
- If the person can’t swallow safely: don’t give food or drink; use glucagon if prescribed and call emergency services
- After recovery, note time, suspected cause, and actions taken; share with the clinician
6 Special situations (driving, illness, appointments) â–ľ
- Driving: Check first. If low, treat, recheck, and wait until normal and you feel clear-headed.
- Illness: Vomiting/poor intake? You may need a simplified plan—contact your clinician.
- Clinic days: Bring meter/CGM and a short log: times, readings, meals, activity, and any lows.
7 Myths to ignore â–ľ
- “Chocolate works fast.” Fat slows sugar—use glucose tabs, juice, or regular soda first.
- “If I feel okay, I’m okay.” Some people feel few signs—use a meter/CGM and routines.
- “One low doesn’t matter.” Repeated lows increase risk and can blunt warning signs.
8 FAQs â–ľ
What number is an emergency?
Any low with severe symptoms (confusion, seizure, fainting) or inability to swallow is an emergency—use glucagon if prescribed and call for help.
How can I stop nighttime lows?
Avoid heavy evening alcohol, review medicine timing, ask if a small balanced snack is right for you, and use CGM alerts if available.
Should I change my dose after a low?
Don’t adjust on your own. Record what happened and contact your clinician—doses or timing may need to be personalized.
Educational content only. Always follow your clinician’s advice.