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.

Reduce autoimmune activity

What this outcome means

Autoimmune disease activity is how actively your immune system is attacking your own tissue, shaping whether symptoms simmer quietly or flare hard. On DoseRank it maps to a defined health outcome built from human studies on disease-activity indexes, inflammatory markers, and autoantibody levels – data sourced from open sources and specialized resources. DoseRank is not medical advice.

Who it's for

Active flaresPeriods when symptoms intensify and daily life narrows.

Seeking remissionPeople working to keep a diagnosed condition quiet and stable.

Newly diagnosedThose just learning to track and read their own disease activity.

Stack buildersAlready taking supplements such as Selenium Yeast and want the dose right.

Evidence level

78Moderate-strong

Selenium Yeast – has moderate public evidence for this outcome. This usually means there are smaller or mechanistic studies, but not randomized human trials. A DoseFit Score of 90 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 available ingredients

Selenium Yeast is the best supported ingredient signal for this outcome.

Dose matchedDoseFit 90

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Selenium Yeast 200 mcg vs 100-200 mcg.

Processed

269

Available

269

Ingredients

Brands

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?

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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.

Reduce autoimmune activity

What this outcome means

Who it's for

Active flaresPeriods when symptoms intensify and daily life narrows.

Seeking remissionPeople working to keep a diagnosed condition quiet and stable.

Newly diagnosedThose just learning to track and read their own disease activity.

Stack buildersAlready taking supplements such as Selenium Yeast and want the dose right.

Evidence level

78Moderate-strong

Best available ingredients

Selenium Yeast is the best supported ingredient signal for this outcome.

Dose matchedDoseFit 90

Scores reward products dosed inside or above the studied range, not just the right ingredient. Examples: In range: Selenium Yeast 200 mcg vs 100-200 mcg.

Processed

269

Available

269

Ingredients

Brands

Coverage

100%

Relevant ingredients

Which ingredient types matter for autoimmune disease activityOpen to see which ingredient types matter for autoimmune disease activity

229 products across 2 ingredient types — open to filter the ranking.

Use types to filter ranked products

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:

Minerals & Trace Elements

149 products

Inorganic nutrients from calcium to zinc. The chemical form drives absorption – chelates and citrates usually beat cheap oxides.

Top decision cards

Best products for autoimmune disease activity

Ranking by · Composite outcome score

Best overall — the composite outcome score.

Top pick · DoseRank

Why this ranks #1 for autoimmune disease activity

21st Century, Selenium, 200 mcg, 60 Capsules

21st Century$0.09 / serving4.8 · 11,059Available now

Also helps with

Selenium status

Antioxidant capacity

Immune function

Why this ranks here

Evidence fitSelenium Yeast has moderate human evidence for this outcome.
Dose fitSelenium Yeast at 200 mcg lands inside the studied 100-200 mcg window.
Price / serving$0.09 per serving — low 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

200 mcgIn rangeinside the studied 100-200 mcg window

Compare top 3 Product data Open at retailer

The rest of the ranking · DoseRank

Top 10 ranked products

Swanson Vitamins, SelenoExcell®, Selenium, 200 mcg, 60 Capsules

Swanson VitaminsClinical47Dose fit90Popularity76$0.08/ serving

Dr. Mercola, Zinc Plus Selenium, 90 Capsules

Dr. MercolaClinical47Dose fit90Popularity91$0.24/ serving

Terry Naturally, Zinc Plus Selenium, 60 Capsules

Terry NaturallyClinical47Dose fit90Popularity84$0.27/ serving

Nature's Bounty, Selenium, 200 mcg, 100 Tablets

Nature's BountyClinical47Dose fit90Popularity50$0.08/ serving

Solaray, High Potency Selenium, 200 mcg, 100 VegCaps

SolarayClinical47Dose fit90Popularity50$0.13/ serving

Source Naturals, Selenium, 200 mcg, 120 Tablets

Source NaturalsClinical47Dose fit90Popularity50$0.07/ serving

California Gold Nutrition, Multivitamin & Mineral, Two-A-Day, 60 Veggie Capsules

California Gold NutritionClinical47Dose fit90Popularity98$0.56/ serving

Seeking Health, Trace Minerals Complex, Iron-Free, 30 Capsules

Seeking HealthClinical47Dose fit90Popularity91$0.63/ serving

Nature's Truth, Selenium, High Potency, 200 mcg, 100 Tablets

Nature's TruthClinical47Dose fit90Popularity30$0.07/ serving