Everything DoseRank tracks on the inulin & prebiotic fiber shelf — Partially Hydrolyzed Guar Gum (PHGG). The category itself is never ranked: 52 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
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.
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
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. 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.
Start with a goal, not a brand
Browsing inulin & prebiotic fiber supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Microbiome diversityEcologic diversity of gut microbial communities.5 rankedModerate-strong
Stool consistencyForm or texture of stool.8 rankedStrong
ConstipationInfrequent, difficult, or hard bowel movements.52 rankedStrong
Postprandial glucoseBlood glucose after meals.48 rankedStrong
SatietySense of fullness after eating.51 rankedModerate-strong
ThermogenesisHeat production and metabolic energy expenditure.42 rankedStrong
Resting energy expenditureCalories burned at rest; marker of basal metabolism.42 rankedStrong
Fasting insulinBaseline insulin concentration.7 rankedStrong
Abdominal painPain arising from the abdomen or digestive tract.9 rankedStrong
Digestive comfortSubjective ease and comfort of digestion.19 rankedModerate-strong
Fasting blood glucoseBlood glucose after fasting.27 rankedModerate-strong
Calcium statusAdequacy of calcium availability or stores.35 rankedStrong
LDL cholesterolLow-density lipoprotein cholesterol; lower is often preferred.47 rankedStrong
Atopic dermatitis symptomsItching, rash, and inflammation related to eczema.4 rankedModerate-strong
AppetiteDesire to eat; may be clinically favorable or unfavorable depending on context.5 rankedModerate-strongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best inulin & prebiotic fiber supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 52 products against that goal's trials.