Everything DoseRank tracks on the formula shelf. The category itself is never ranked: 18 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 formula 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.
Pregnancy rateFrequency of achieved pregnancies.1 rankedModerate-strong
Eye strainVisual fatigue or discomfort from eye use.5 rankedModerate-strong
HalitosisBad breath or unpleasant oral odor.3 rankedModerate-strong
Macular pigment optical densityRetinal pigment measure sometimes used in lutein/zeaxanthin studies.3 rankedStrong
Contrast sensitivityAbility to distinguish shades or low-contrast details.2 rankedStrong
Visual acuityClarity or sharpness of vision.2 rankedModerate-strong
Copper statusBiochemical sufficiency of copper.4 rankedStrong
Fasting insulinBaseline insulin concentration.3 rankedStrong
Cataract progressionWorsening of lens opacity over time.4 rankedModerate-strong
Vascular functionOverall health and reactivity of the circulatory system.4 rankedModerate-strong
Age-related macular degeneration progressionWorsening retinal degeneration affecting central vision.5 rankedStrong
Bone turnover markersBiochemical indicators of bone formation and resorption.2 rankedStrong
Folate statusBiochemical sufficiency of folate.4 rankedStrong
Night vision or dark adaptationAbility to see or adapt under low-light conditions.3 rankedLimited
Iron statusOverall iron sufficiency and availability.7 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best formula supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 18 products against that goal's trials.