Sick Day Medication Management for Patients with Diabetes
Patients with diabetes experiencing acute illness with signs of volume depletion must immediately stop SGLT2 inhibitors, metformin, ACE inhibitors/ARBs, diuretics, and NSAIDs for up to 3 days or until symptoms resolve, while increasing glucose monitoring to every 4-6 hours and maintaining aggressive hydration. 1, 2
Medications to Temporarily Stop During Illness
High Priority - Stop Immediately:
- SGLT2 inhibitors (empagliflozin, dapagliflozin, canagliflozin) - 96% consensus recommendation due to diabetic ketoacidosis risk even with normal glucose levels 1, 2
- Metformin - 86% consensus to stop due to lactic acidosis risk during volume depletion 1, 2
- ACE inhibitors/ARBs - 90% consensus to withhold due to acute kidney injury risk 1, 2
- All diuretics (loop, thiazide, potassium-sparing) - 90-95% consensus to stop 1, 2
- NSAIDs - 95% consensus to discontinue 1, 2
- ARNI (sacubitril/valsartan) - 88% consensus to hold 1
Duration of Medication Hold:
- Stop for up to 3 days or until signs and symptoms have resolved (100% and 88% consensus respectively) 1, 2
- Resume volume-depleting medications at usual doses within 24-48 hours of eating and drinking normally 1, 2
Insulin and Hypoglycemic Agent Adjustments
If Blood Glucose is LOW:
- Hold insulin, sulfonylureas, and meglitinides until blood glucose recovers (96% consensus) 1, 2
- If sulfonylurea was already taken, consume foods to prevent hypoglycemia for 12-24 hours until medication effect wears off (78% consensus) 1
- Resume at usual doses as soon as symptoms improve and normal eating resumes (100% consensus) 1, 2
If Blood Glucose is ELEVATED:
- Increase basal and bolus insulin by 10-20% empirically 1, 2
- If unsuccessful at lowering blood glucose after this adjustment, contact healthcare provider 1, 2
Critical Pitfall: Never discontinue basal insulin completely in patients with type 1 diabetes, even during illness, as this can precipitate diabetic ketoacidosis 1
Monitoring Requirements During Illness
Glucose Monitoring:
- Increase frequency to every 4-6 hours while awake for all patients on insulin (100% consensus) 1
- Check every 2-4 hours during acute illness 2
Ketone Monitoring:
- Patients on SGLT2 inhibitors, insulin, or ketogenic diets should check ketones (95% consensus) 1
- Check blood or urine ketones when glucose >300 mg/dL 2
- SGLT2 inhibitors carry particular risk for euglycemic ketoacidosis (normal or mildly elevated glucose with ketones) 2
Hydration and Nutrition Management
- Drink 8 oz of fluid every hour while awake 2
- Use limited caffeine and consider electrolyte replacement solutions (92% consensus) 1
- Consume easily digestible liquids containing both carbohydrates and salt 2
- Maintain fluid and carbohydrate intake even if unable to eat solid foods 2
When to Seek Immediate Medical Attention
Contact healthcare provider or seek emergency care for:
- Difficulty or rapid breathing (100% consensus) 1, 2
- Reduced level of consciousness or new confusion (96% consensus) 1, 2
- Blood pressure <90/60 mmHg or symptomatic hypotension 2
- Moderate-to-large ketones present 2
- Heart rate >100 bpm at rest 2
- Fever >101°F (38.3°C) that persists 2
- Symptoms lasting >72 hours (100% consensus) 1, 2
- Recurrent low blood glucose readings (96% consensus) 1
- Significant increase in blood glucose not responding to self-adjustment after 24 hours (96% consensus) 1
- Fainting or falls (71% consensus) 1
Resuming Medications After Illness Recovery
Systematic Restart Protocol:
Medications causing hypoglycemia (insulin, sulfonylureas, meglitinides): Resume at usual doses as soon as symptoms improve and normal eating resumes (100% consensus) 1, 2
Volume-depleting medications (diuretics, ACE inhibitors/ARBs): Resume at usual doses within 24-48 hours of eating and drinking normally (95% consensus) 1, 2
Other medications (metformin, SGLT2 inhibitors): Resume at usual doses within 24-48 hours of eating and drinking normally (95% consensus) 1
If symptoms last >72 hours: Seek assistance from healthcare provider about medication resumption (100% consensus) 1
Patient Education Essentials
All patients must understand:
- Which specific medications to stop and which to continue during illness 2
- How to recognize and treat hypoglycemia 2
- Proper glucose and ketone monitoring technique 2
- When to contact healthcare provider 2
- Never discontinue insulin for economic or other reasons 2
Common Pitfall: The most dangerous error is continuing SGLT2 inhibitors during illness, as they can cause diabetic ketoacidosis even with normal glucose levels, making the diagnosis more difficult and delaying treatment 2