Condition
Chronic Kidney Disease (CKD)
Chronic kidney disease means the kidneys slowly lose their ability to filter waste and extra fluid from the blood, which raises heart risk. Coenzyme Q10 and black seed have moderate evidence, and small trials found blood glucose improved with the first and the inflammation marker CRP went down with the second. Those trials measured blood markers rather than kidney function itself, so the picture is still early.
Sources: PMID 35958521; PMID 37036558
- Supplements studied
- 21
- Graded outcomes
- 18
- Trials
- 15
- People studied
- 13,448
Evidence by supplement
- Strong
- Moderate
- Limited
- Very limited
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Blood glucose Small Improvement | Improves (the measure goes down) | Small effect | 7 studies | 216 people | ||
Studies that measured blood glucose
| ||||||
| C-Reactive Protein (CRP) | Improves (the measure goes down) | 3 studies | 70 people | |||
Studies that measured c-reactive protein (crp)
| ||||||
| Kidney Function | Improves (the measure goes up) | 2 studies | 135 people | |||
Studies that measured kidney function | ||||||
| Liver Enzymes | Changes; see studies | 2 studies | 216 people | |||
Studies that measured liver enzymes | ||||||
| Total cholesterol | Improves (the measure goes down) | 2 studies | 190 people | |||
| Blood Pressure | Improves (the measure goes down) | 1 study | 156 people | |||
| Triglycerides | Improves (the measure goes down) | 1 study | 216 people | |||
| Blood Urea Nitrogen | Improves (the measure goes up) | 1,311 people | ||||
| Blood Urea Nitrogen (BUN) | Improves (the measure goes up) | 894 people | ||||
| Body Mass Index (BMI) | Improves (the measure goes down) | 266 people | ||||
| Creatinine | Improves (the measure goes up) | 1,617 people | ||||
| Insulin Resistance | Improves (the measure goes down) | 156 people | ||||
| Serum Albumin | Improves (the measure goes up) | 516 people | ||||
| TNF-Alpha | Improves (the measure goes down) | 156 people | ||||
| Uric Acid | Improves (the measure goes down) | 353 people | ||||
Black seed
- C-Reactive Protein (CRP): improves
- Interleukin 6: changes; see studies
- Oxidative Stress Biomarkers: changes; see studies
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| C-Reactive Protein (CRP) Small Decrease | Improves (the measure goes down) | Small effect | 1 study | 727 people | ||
Studies that measured c-reactive protein (crp) | ||||||
| Interleukin 6 | Changes; see studies | 156 people | ||||
| Oxidative Stress Biomarkers | Changes; see studies | 591 people | ||||
| Superoxide Dismutase Activity | Improves (the measure goes up) | 364 people | ||||
| TNF-Alpha | Changes; see studies | 307 people | ||||
| Total Antioxidant Capacity (TAC) | Improves (the measure goes up) | 480 people | ||||
Fish Oil
- Inflammation: improves
- Weight: improves
Charcoal
- Uremic Toxins: changes; see studies
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Uremic Toxins Small studies suggest activated charcoal (AST-120/Kremezin) may reduce uremic toxins like indoxyl sulfate in CKD. Mixed results on clinical outcomes. | Changes; see studies | Small effect | 200 people |
Creatine
- Kidney Function
- Muscle Creatine Content: improves
L-Carnitine
- Aerobic Exercise Metrics
- High-density lipoprotein (HDL): improves
- Total cholesterol: improves
Vitamin E
- Free Testosterone
- Luteinizing Hormone: improves
- Prolactin: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Free Testosterone No effect | NoneNo effect | 1 study | 36 people | |||
Studies that measured free testosterone | ||||||
| Luteinizing Hormone | Improves (the measure goes up) | 36 people | ||||
| Prolactin | Improves (the measure goes up) | 36 people | ||||
Yarrow
- Plasma Nitrate
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Plasma Nitrate No effect | NoneNo effect | 1 study | 31 people | |||
Vitamin C
- High-density lipoprotein (HDL)
- Triglycerides: improves
- Inflammation: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| High-density lipoprotein (HDL) No effect | NoneNo effect | 112 people | ||||
| Triglycerides | Improves (the measure goes down) | 5 studies | 112 people | |||
Studies that measured triglycerides
| ||||||
| Inflammation | Improves (the measure goes down) | 2 studies | 941 people | |||
| Total cholesterol | Improves (the measure goes down) | 2 studies | 112 people | |||
| Low-density lipoprotein (LDL) | Improves (the measure goes down) | 112 people | ||||
Selenium
- Body Mass Index (BMI)
- Triglycerides: improves
- C-Reactive Protein (CRP): improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Body Mass Index (BMI) No effect | NoneNo effect | 2,080 people | ||||
| Triglycerides | Improves (the measure goes down) | 1 study | 2,080 people | |||
Studies that measured triglycerides | ||||||
| C-Reactive Protein (CRP) | Improves (the measure goes down) | 2,080 people | ||||
| Ferritin | Improves (the measure goes up) | 2,080 people | ||||
| Hemoglobin | Improves (the measure goes up) | 2,080 people | ||||
| High-density lipoprotein (HDL) | Improves (the measure goes up) | 2,080 people | ||||
| Low-density lipoprotein (LDL) | Improves (the measure goes down) | 2,080 people | ||||
| Total cholesterol | Improves (the measure goes down) | 2,080 people | ||||
Fiber
- C-Reactive Protein (CRP)
- Blood Urea Nitrogen
- Interleukin 6: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| C-Reactive Protein (CRP) No effect | NoneNo effect | 157 people | ||||
| Blood Urea Nitrogen | Small effect | 1 study | 498 people | |||
| Interleukin 6 | Improves (the measure goes down) | 265 people | ||||
| p-cresyl sulfate (PCS) | Improves (the measure goes up) | 398 people | ||||
| Serum Indoxyl Sulfate (IS) | Improves (the measure goes up) | 398 people | ||||
| TMAO | Improves (the measure goes up) | 135 people | ||||
| TNF-Alpha | Improves (the measure goes down) | 157 people | ||||
| Uric Acid | Improves (the measure goes down) | 118 people | ||||
Vitamin K
- Calcium Score
- Osteocalcin: improves
- Pulse Wave Velocity: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Calcium Score No effect | NoneNo effect | 733 people | ||||
| Osteocalcin | Improves (the measure goes up) | 1 study | 733 people | |||
| Pulse Wave Velocity | Improves (the measure goes down) | 733 people |
Soy Protein
- Blood Urea Nitrogen
- Serum Albumin: improves
- C-Reactive Protein (CRP): improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Blood Urea Nitrogen No effect | NoneNo effect | 522 people | ||||
| Serum Albumin | Improves (the measure goes up) | 1 study | 522 people | |||
| C-Reactive Protein (CRP) | Improves (the measure goes down) | 522 people | ||||
| High-density lipoprotein (HDL) | Improves (the measure goes up) | 522 people | ||||
| Low-density lipoprotein (LDL) | Improves (the measure goes down) | 522 people | ||||
| Proteinuria | Improves (the measure goes up) | 522 people | ||||
| Serum Calcium | Improves (the measure goes up) | 522 people | ||||
| Serum Phosphorus | Changes; see studies | 522 people | ||||
| Total cholesterol | Improves (the measure goes down) | 522 people | ||||
| Triglycerides | Improves (the measure goes down) | 522 people |
Sodium Bicarbonate
- Blood Pressure
- Serum Bicarbonate: improves
- Kidney Function: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Blood Pressure No effect | NoneNo effect | 1,380 people | ||||
| Serum Bicarbonate | Improves (the measure goes up) | 26 studies | 1,380 people | |||
| Kidney Function | Improves (the measure goes up) | 1 study | 1,380 people | |||
| Net Acid Excretion | Improves (the measure goes up) | 1 study | 108 people | |||
| Heart Failure Risk | Changes; see studies | 1,380 people | ||||
| Leg Edema | Changes; see studies | 1,380 people | ||||
| Plasma Total Carbon Dioxide | Improves (the measure goes up) | 108 people |
Resistant Starch
- Blood Urea Nitrogen (BUN)
- C-Reactive Protein (CRP)
- Serum Phosphorus: changes; see studies
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Blood Urea Nitrogen (BUN) No effect | NoneNo effect | 203 people | ||||
| C-Reactive Protein (CRP) No effect | NoneNo effect | 167 people | ||||
| Serum Phosphorus | Changes; see studies | 2 studies | 205 people | |||
| TNF-Alpha | Improves (the measure goes down) | 1 study | 116 people | |||
| High-density lipoprotein (HDL) | Improves (the measure goes up) | 158 people | ||||
| Interleukin 6 | Improves (the measure goes down) | 213 people | ||||
| Kidney Function | Improves (the measure goes up) | 197 people | ||||
| Serum Albumin | Improves (the measure goes up) | 284 people | ||||
| Total cholesterol | Improves (the measure goes down) | 158 people | ||||
| Triglycerides | Improves (the measure goes down) | 158 people | ||||
| Uric Acid | Improves (the measure goes down) | 168 people |
Nicotinamide
- Serum Calcium
- Serum Phosphorus: changes; see studies
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Serum Calcium No effect | NoneNo effect | 219 people | ||||
| Serum Phosphorus | Changes; see studies | 1 study | 98 people |
Chia seeds
- Itching: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Itching | Improves (the measure goes up) | 1 study | 5 people |
Melatonin
- Cerebral Blood Flow: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Cerebral Blood Flow | Improves (the measure goes up) | 1 study | 10 people |
Curcumin
- Vascular Function: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Vascular Function | Improves (the measure goes up) | 1 study | 88 people |
Cocoa Extract
- Kidney Oxygenation: improves
| Grade | Outcome | Effect | Size | Studies | People | Studies list |
|---|---|---|---|---|---|---|
| Kidney Oxygenation | Improves (the measure goes up) | 1 study | 10 people |
Key findings
- Blood glucoseImproves (the measure goes down)
- C-Reactive Protein (CRP)Improves (the measure goes down)
- InflammationImproves (the measure goes down)
The Chronic Kidney Disease (CKD) Supportive Care protocol
2 primary supplements · 2 supporting supplements
- Omega-3 Fatty Acids2–4 g EPA/DHA daily
- Coenzyme Q10100–300 mg daily
Shop the evidence-backed picks
Support alongside medical care. These supplements are not a treatment for Chronic Kidney Disease (CKD). If you are being treated for it, talk to your clinician before adding one: supplements can interact with medicines.
The supplements graded A or B for Chronic Kidney Disease (CKD). Each opens third-party tested products for that supplement.
- Grade B
- Grade B
- Grade B
Links to Fullscript, iHerb or Thorne carry our referral, so we may earn a commission at no extra cost to you. Grades come from the research and never change based on what we earn. Fullscript asks for a free account before it shows its catalog and prices. Full disclosure
Studies cited
4 studies from PubMed
- Mediterranean diet improves dyslipidemia and biomarkers in chronic renal failure patients
- Safety and impact of the Mediterranean diet in patients with chronic kidney disease: a pilot randomized crossover trial.
- Efficacy and safety of ketoanalogue supplementation combined with protein-restricted diets in advanced chronic kidney disease: a systematic review and meta-analysis.
- Concentrated red grape juice exerts antioxidant, hypolipidemic, and antiinflammatory effects in both hemodialysis patients and healthy subjects