Medications and Supplements to Avoid in Stage 3 Chronic Kidney Disease
In stage 3 CKD, you must avoid herbal remedies entirely, use extreme caution with NSAIDs (avoid if GFR <30), temporarily discontinue nephrotoxic drugs during acute illness, and seek medical advice before using any over-the-counter medicines or nutritional protein supplements. 1, 2
Medications That Require Complete Avoidance
Herbal Remedies
- All herbal remedies should not be used in people with CKD 1, 2
- This is a strong recommendation (1B) from KDIGO guidelines
- Specific herbs documented to cause kidney injury include aristolochic acid-containing herbs, St. John's wort, thundergod vine, tribulus, and wormwood 3
High-Risk Medications Requiring Avoidance or Extreme Caution
NSAIDs (Nonsteroidal Anti-Inflammatory Drugs):
- Avoid in people with GFR <30 ml/min/1.73 m² 2
- Prolonged therapy is not recommended when GFR <60 ml/min/1.73 m² 2
- Should not be used in people taking lithium or RAAS blocking agents 2
- Must be temporarily discontinued during serious intercurrent illness that increases AKI risk 1, 2
Oral Phosphate-Containing Bowel Preparations:
- Do not use in people with GFR <60 ml/min/1.73 m² (all stage 3 CKD) 2
- This includes preparations used for colonoscopy
Medications Requiring Temporary Discontinuation During Acute Illness
When you have serious intercurrent illness (infections, dehydration, planned procedures), temporarily discontinue these medications: 1, 2, 1
- RAAS blockers (ACE inhibitors, ARBs, aldosterone inhibitors, direct renin inhibitors)
- Diuretics
- NSAIDs
- Metformin
- Lithium
- Digoxin
This applies to all stage 3 CKD patients (GFR <60 ml/min/1.73 m²) and is critical to prevent acute kidney injury 1, 2
Metformin Management in Stage 3 CKD
Stage 3a (GFR 45-59 ml/min/1.73 m²):
Stage 3b (GFR 30-44 ml/min/1.73 m²):
- Review metformin use carefully 1, 2, 1
- Consider risk-benefit if GFR is stable 2
- Suspend during acute illness 2, 4
Over-the-Counter Medicines and Supplements
Critical Practice Point:
- Adults with CKD must seek medical or pharmacist advice before using over-the-counter medicines or nutritional protein supplements 1, 2, 1
- This is a strong recommendation (1B) from KDIGO 1
Specific Supplements to Avoid or Use with Caution:
- Potassium supplements (especially if on RAAS inhibitors) 2
- High-dose vitamin A, C, and D supplements 2, 3
- Chromium supplements 3
- Creatine supplements 3
- Glucosamine 3
Contrast Agents
Gadolinium-Containing Contrast:
- Do not use if GFR <15 ml/min/1.73 m² 1
- If GFR <30 ml/min/1.73 m² (stage 3b), preferentially use macrocyclic chelate preparations 1
Iodinated Radiocontrast:
- Withdraw potentially nephrotoxic agents before and after procedures 1, 2, 1
- Ensure adequate hydration with saline 1, 2, 1
Medications Requiring Dose Adjustment (Not Avoidance)
These require dose modification but can still be used: 2, 5
- Antihypertensives: Beta-blockers (reduce dose by 50% if GFR <30), digoxin (reduce based on plasma levels)
- Analgesics: Opioids (reduce dose when GFR <60)
- Antimicrobials: Most require dose adjustment based on specific GFR thresholds
- Hypoglycemics: Sulfonylureas (avoid glyburide, prefer glipizide), insulin may need dose reduction
Common Pitfalls to Avoid
Do not automatically discontinue RAAS inhibitors when GFR declines:
- Continue ACE inhibitors or ARBs even when eGFR falls below 30 ml/min/1.73 m² unless specific contraindications arise 6
- Only reduce dose or discontinue for symptomatic hypotension, uncontrolled hyperkalemia despite treatment, or severe uremic symptoms 6
Monitor closely after starting or adjusting medications:
- Check GFR, electrolytes, and drug levels regularly for nephrotoxic agents like lithium and calcineurin inhibitors 1, 2, 1
- Assess within 2-4 weeks of initiating or increasing RAAS inhibitors 6
Do not use combination RAAS therapy:
- Avoid any combination of ACE inhibitor, ARB, and direct renin inhibitor 6