DOSERANKEVIDENCE-BASED SUPPLEMENTS
DOSERANKEVIDENCE-BASED SUPPLEMENTS© 2026 DoseRank · Evidence-based supplements
Methodology·Outcomes·Categories
DOSERANKEVIDENCE-BASED SUPPLEMENTS
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  2. ·Outcomes
  3. ·Kidney function
  4. ·Serum creatinine

Lower serum creatinine

View top productsTake the 60-sec quizGet the reportSee methodology

What this outcome means

Serum creatinine is a waste product measured in your blood that doctors read as a window into how well your kidneys are filtering. On DoseRank it maps to a defined health outcome built from human studies on serum creatinine levels, estimated filtration rate, and kidney-clearance markers – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Routine-panel watchersKeeping an eye on creatinine flagged in bloodwork.
Kidney-conscious adultsTracking filtration markers because of family or health history.
Heavy-training individualsHigh muscle turnover that can nudge creatinine readings upward.
Stack buildersAlready taking supplements such as Cordyceps Sinensis / CS-4 and want the dose right.

Evidence level

92Strong

Cordyceps Sinensis / CS-4 – has strong public evidence. DoseRank looks at both evidence quality and formula fit. A DoseFit Score of 70 means this product's ingredient forms and doses are close to what was used in the studies behind this ranking - DoseRank weights each product ingredient.

Best ingredients

Cordyceps Sinensis / CS-4 is the best supported ingredient signal for this outcome.

Dose partly matchedDoseFit 70

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Cordyceps Sinensis / CS-4 1500 mg vs 1000-5000 mg.

ProcessedProcessedEvery product DoseRank ingested and scored for this outcome, before any availability or relevance filtering.
586
AvailableAvailableOf the products processed, how many are currently in stock and purchasable from a tracked retailer.
586
IngredientsIngredientsNumber of relevant ingredients for this outcome. Each is judged on its own evidence and dose fit score.
4
BrandsBrandsNumber of unique brands represented across the ranked products for this outcome.
150
CoverageCoverageHigher is betterShare of the relevant, in-stock market DoseRank has structured data for. Higher coverage means fewer blind spots in the ranking.
100%

How to read the scores

What every metric means

Each score is 0–100. Higher is better for every metric below.
CompositeThe overall DoseRank score — a weighted blend of clinical strength, evidence, dose fit, trust and value.Higher is better
ClinicalHow strongly the formula's ingredients and doses match what clinical studies used for this outcome.Higher is better
EvidenceHow much published human research backs the formula's key ingredients for this outcome — both how many studies exist and how strong they are.Higher is better
ValueHow the price per serving compares with similar products for this outcome — 50 is the typical price, higher means better value for your money.Higher is better
TrustHow well customers rate this product, with extra weight given to ratings backed by a large number of reviews.Higher is better
PopularityHow strongly this product sells compared with the other ranked products for this outcome.Higher is better

This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →

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A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.

Questions

Frequently asked

Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.

DoseRank is not medical advice. Scores summarize publicly available product and study data to help you compare options; they are not a diagnosis or a treatment recommendation. If you are pregnant, breastfeeding, taking medication, or managing a health condition, consult a qualified clinician before starting any supplement. Retailer links may be affiliate links and DoseRank may earn a commission — rankings and placement are determined by the scoring model only, never by payment from a brand. Statements about supplements have not been evaluated by the FDA. Products are not intended to diagnose, treat, cure, or prevent any disease.

Relevant ingredients

Which ingredient types matter for serum creatinineOpen to see which ingredient types matter for serum creatinine

600 products across 2 ingredient types — open to filter the ranking.
Use types to filter ranked products

Amino Acids & Derivatives

520 products

The building blocks of protein, taken singly for targeted effects – leucine for muscle, theanine for calm. Free-form versions absorb fast on an empty stomach.

Typical: , ,

Botanicals/Herbal Extracts

80 products

Concentrated plant and herbal extracts standardized to actives. Potency depends on the extract ratio and marker content, not raw weight.

Typical:

Top decision cards

Best products for serum creatinine

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for serum creatinine

#1

NOW Foods, Cordyceps, 90 Veg Capsules (750 mg per Capsule)

NOW Foods$0.36 / serving4.8 · 6,300Available now

Why this ranks here

  • Evidence fitCordyceps Sinensis / CS-4 is the strongest evidence signal for this outcome.
  • Dose fitCordyceps Sinensis / CS-4 at 1500 mg lands inside the studied 1000-5000 mg window.
  • Price / serving$0.36 per serving — mid price tier for this outcome.
  • AvailabilityIn stock across major retailers; 99% availability confidence.
  • TrustStrong trust signals — consistently high marks from verified buyer ratings.

Trade-offs

Evidence depth trails the rest of this list

The numbers

83
87
70
63

1500 mgIn rangeinside the studied 1000-5000 mg window
Compare top 3Product dataOpen at retailer

The rest of the ranking · DoseRank

Top 10 ranked products
#ProductPrice

Keep exploring

Related outcomes

Albuminuria or proteinuriaProtein leakage into urine indicating kidney damage risk.Kidney functionOverall renal filtration and excretory performance.
Last updated Jun 12, 2026

DoseRank is not medical advice. Scores summarize publicly available product and study data to help you compare options; they are not a diagnosis or a treatment recommendation. If you are pregnant, breastfeeding, taking medication, or managing a health condition, consult a qualified clinician before starting any supplement. Retailer links may be affiliate links and DoseRank may earn a commission — rankings and placement are determined by the scoring model only, never by payment from a brand. Statements about supplements have not been evaluated by the FDA. Products are not intended to diagnose, treat, cure, or prevent any disease.

Comparison preview

Compare the top 3, side by side

Sign-in to see all metrics

The top three for the current view — free to read, no account. Saving, exporting, alerts and the full filter set unlock once you sign in or build a personal report.

Metric
#1NOW Foods, Cordyceps, 90 Veg Capsules (750 mg per Capsule)NOW Foods · $0.36/serving
#2Swanson Vitamins, Cordyceps, 120 Capsules (600 mg per Capsule)Swanson Vitamins · $0.28/serving
#3Force Factor, Fundamentals, Cordyceps, 60 CapsulesForce Factor · $0.37/serving
Composite838281
Clinical878787
Dose fit707567
Value636862
Popularity916767
Key dosages & price · raw values
1500 mgHighest—1000 mg
Rating
Number of ratings
Price
Price per serving
Serving size
Trust

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Unlocks with accountFull list of ingredients and dosagesFull list of metricsPrice-drop alertsRanking-changes alertsPersistent stack