Is a higher dose always better?

No. Dose-fit rewards landing inside the range studied for the outcome — over-dosing (common with melatonin) or under-dosing both lower the score. The goal is the effective dose, not the biggest number.

What does the Value score mean?

The Value score compares a product's price per serving with clinically relevant products ranked for the same outcome. A score of 50 is the typical price; above 50 means better value than typical, while below 50 means the product costs more than typical. It is a 0–100 value signal, not a percentile.

Why is the cheapest product not #1?

Cost is only one input. The cheapest pick here is a citrate form with weaker absorption and a stock-risk flag, so it leads on Value-for-cost but trails on the composite that also weighs evidence, dose fit and availability.

Are these affiliate links?

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.

Is this medical advice?

No. DoseRank summarizes evidence to help you choose; it is not a substitute for a clinician, especially if you are pregnant, breastfeeding, on medication, or managing a health condition.

Improve stool consistency

What this outcome means

Stool consistency is the form and texture of your bowel movements, from hard and lumpy to loose and watery. On DoseRank it maps to a defined health outcome built from human studies on Bristol Stool Scale ratings, stool water content, and transit-time measures – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Hard and dryStools that are firm, pellet-like, and difficult to pass.

Loose and urgentFrequent watery movements that come on without much warning.

Unpredictable swingsTexture that flips between too hard and too loose week to week.

Stack buildersAlready taking supplements such as Partially Hydrolyzed Guar Gum (PHGG) and want the dose right.

Evidence level

92Strong

Partially Hydrolyzed Guar Gum (PHGG) – has strong public evidence. DoseRank looks at both evidence quality and formula fit. A DoseFit Score of 69 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

Partially Hydrolyzed Guar Gum (PHGG) is the best supported ingredient signal for this outcome.

Dose partly matchedDoseFit 69

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Partially Hydrolyzed Guar Gum (PHGG) 6 g vs 5-15 g.

Processed

775

Available

775

Ingredients

Brands

150

Coverage

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 →

Not sure which is right for you?

Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.

Take 60-sec quiz

Get a personal report

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.

Improve stool consistency

What this outcome means

Who it's for

Hard and dryStools that are firm, pellet-like, and difficult to pass.

Loose and urgentFrequent watery movements that come on without much warning.

Unpredictable swingsTexture that flips between too hard and too loose week to week.

Stack buildersAlready taking supplements such as Partially Hydrolyzed Guar Gum (PHGG) and want the dose right.

Evidence level

92Strong

Best ingredients

Partially Hydrolyzed Guar Gum (PHGG) is the best supported ingredient signal for this outcome.

Dose partly matchedDoseFit 69

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Partially Hydrolyzed Guar Gum (PHGG) 6 g vs 5-15 g.

Processed

775

Available

775

Ingredients

Brands

150

Coverage

100%

Relevant ingredients

Which ingredient types matter for stool consistencyOpen to see which ingredient types matter for stool consistency

74 products across 3 ingredient types — open to filter the ranking.

Use types to filter ranked products

Fibers & Prebiotics

40 products

Indigestible carbs that feed gut bacteria and add bulk. Start low and ramp slowly – too much too fast means bloating and gas.

Typical:

Probiotics & Microorganisms

33 products

Live beneficial bacteria and yeasts measured in CFUs. Strain identity and viability at expiry matter far more than headline colony counts.

Typical:

Adsorbents & Inert Functional Materials

1 product

Binding agents like charcoal and silica that adsorb or stabilize. Functional and non-nutritive – they can bind nutrients, so time them apart.

Typical:

Top decision cards

Best products for stool consistency

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for stool consistency

California Gold Nutrition, Prebiotic Fiber, 6.3 oz (180 g)

California Gold Nutrition$0.70 / serving4.7 · 7,962Available now

Also helps with

Irritable bowel symptom severity

Bloating

Microbiome diversity

Why this ranks here

Evidence fitPartially Hydrolyzed Guar Gum (PHGG) is the strongest evidence signal for this outcome.
Dose fitPartially Hydrolyzed Guar Gum (PHGG) at 6 g lands inside the studied 5-15 g window.
Price / serving$0.70 per serving — high price tier for this outcome.
AvailabilityIn stock across major retailers; 99% availability confidence.
TrustStrong trust signals — consistently high marks from verified buyer ratings.

The numbers

6 gIn rangeinside the studied 5-15 g window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Thorne, FiberMend® Prebiotic, 11.6 oz (330 g)

ThorneClinical87Dose fit74Popularity91$1.35/ serving

California Gold Nutrition, Prebiotic Fiber Plus Turmeric Extract, Organic Ginger Extract and Boswellia Extract, 6.7 oz (189 g)

California Gold NutritionClinical87Dose fit69Popularity76$1.17/ serving

Thorne, Sacro-B™, Probiotic, 60 Capsules (250 mg per Capsule)

ThorneClinical82Dose fit67Popularity80$0.65/ serving

California Gold Nutrition, Fit Appetite, Unflavored, 8.15 oz (231 g)

California Gold NutritionClinical87Dose fit67Popularity30$0.64/ serving

Bluebonnet Nutrition, S. Boulardii Probiotic, 60 Vegetable Capsules

Bluebonnet NutritionClinical83Dose fit74Popularity30$0.76/ serving

Designs For Health, FloraMyces™, 60 Vegetarian Capsules (250 mg per Capsule)

Designs For HealthClinical83Dose fit74Popularity30$1.80/ serving

Jarrow Formulas, Vegan Saccharomyces Boulardii + MOS, 5 Billion CFU, 180 Veggie Capsules

Jarrow FormulasClinical67Dose fit40Popularity96$0.23/ serving

NOW Foods, Saccharomyces Boulardii, 5 Billion CFU, 120 Veg Capsules

NOW FoodsClinical67Dose fit40Popularity96$0.37/ serving

NOW Foods, Saccharomyces Boulardii, Probiotic , 5 Billion CFU, 60 Veg Capsules

NOW FoodsClinical67Dose fit40Popularity98$0.43/ serving