Everything DoseRank tracks on the soy isoflavones shelf — Soy Isoflavones. The category itself is never ranked: 16 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 soy isoflavones 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 8 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Menopausal symptom severityBurden of symptoms such as hot flashes and sleep disturbance.14 rankedStrong
IrritabilityLow threshold for frustration or anger.1 rankedStrong
Endothelial functionAbility of blood vessels to dilate and respond normally.14 rankedModerate-strong
Hot flashesEpisodes of sudden heat sensation commonly related to menopause.1 rankedModerate-strong
Female fertilityAbility to conceive through female reproductive capacity.1 rankedLimited
Choline statusAdequacy of choline availability.2 rankedStrong
Menstrual regularityMore predictable and regular menstrual cycles.1 rankedModerate-strong
Premenstrual symptom severityBurden of PMS-related mood or physical symptoms.1 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best soy isoflavones supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 16 products against that goal's trials.