Everything DoseRank tracks on the thyroid formulas shelf — Ashwagandha. The category itself is never ranked: 87 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 thyroid formulas 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.
CortisolStress-related glucocorticoid hormone level.33 rankedStrong
Thyroid-stimulating hormonePituitary hormone used to assess thyroid status.46 rankedStrong
Stress resilienceAbility to cope with or recover from stress.47 rankedModerate-strong
Free thyroxine (Free T4)Circulating active thyroid hormone fraction.32 rankedLimited
Iodine statusBiochemical sufficiency of iodine.46 rankedStrong
Muscle strengthAbility of muscles to generate force.36 rankedStrong
Thyroid functionOverall function of the thyroid axis.50 rankedModerate-strong
Aerobic capacity (VO2 max)Maximum oxygen utilization during exercise.32 rankedModerate-strong
Attention and concentrationAbility to sustain and direct focus.47 rankedModerate-strong
Perceived stressSubjective experience of stress or overload.34 rankedStrong
Selenium statusBiochemical sufficiency of selenium.29 rankedStrong
Pregnancy rateFrequency of achieved pregnancies.3 rankedModerate-strong
TestosteronePrimary androgen hormone concentration.40 rankedModerate-strong
Zinc statusBiochemical sufficiency of zinc.32 rankedStrong
MemoryAbility to encode, store, and retrieve information.52 rankedModerate-strongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best thyroid formulas supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 87 products against that goal's trials.