Everything DoseRank tracks on the immune support shelf — Probiotic Blends, Echinacea and Ascorbic Acid. The category itself is never ranked: 4.1k 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 immune support supplements without a goal makes no sense — probiotic blends, echinacea and ascorbic acid 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.
Common cold incidenceFrequency of upper respiratory infections resembling the common cold.1.8k rankedModerate-strong
Common cold durationLength of cold episodes.1.6k rankedStrong
Iron statusOverall iron sufficiency and availability.1.5k rankedStrong
Antioxidant capacityMeasured ability to counter oxidative stress.2k rankedStrong
Vitamin C statusBiochemical sufficiency of ascorbic acid.1.1k rankedStrong
Bone mineral densityMeasure of bone strength and mineralization.1.5k rankedStrong
Calcium statusAdequacy of calcium availability or stores.1.5k rankedStrong
Uric acidPurine metabolism marker associated with gout and cardiometabolic risk.1.2k rankedStrong
All-cause mortalityDeath from any cause; lowest-level hard clinical outcome.984 rankedModerate-strong
Digestive comfortSubjective ease and comfort of digestion.1.2k rankedModerate-strong
Fracture riskLikelihood of bone fracture.1.2k rankedStrong
Vitamin D statusBiochemical sufficiency of vitamin D.1.1k rankedStrong
Endothelial functionAbility of blood vessels to dilate and respond normally.1.2k rankedModerate-strong
Fall riskLikelihood of falling due to instability or weakness.981 rankedModerate-strong
Atopic dermatitis symptomsItching, rash, and inflammation related to eczema.689 rankedModerate-strongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best immune support supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 4.1k products against that goal's trials.