Everything DoseRank tracks on the prenatal supplements shelf — Biotin, Potassium Iodide and Kelp. The category itself is never ranked: 223 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 prenatal supplements supplements without a goal makes no sense — biotin, potassium iodide and kelp 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.
Thyroid-stimulating hormonePituitary hormone used to assess thyroid status.122 rankedStrong
Iodine statusBiochemical sufficiency of iodine.116 rankedStrong
Coagulation statusOverall blood clotting tendency.63 rankedStrong
Bleeding tendencyExcess susceptibility to bruising or bleeding.132 rankedStrong
TolerabilityOverall ability to continue the intervention without unacceptable side effects.51 rankedModerate-strong
PhotosensitivityAbnormal skin sensitivity to sunlight or light exposure.92 rankedModerate-strong
Omega-3 indexRed blood cell EPA+DHA content reflecting omega-3 status.84 rankedStrong
Bone turnover markersBiochemical indicators of bone formation and resorption.90 rankedStrong
Riboflavin statusBiochemical sufficiency of vitamin B2.112 rankedStrong
Niacin statusBiochemical sufficiency of vitamin B3.126 rankedStrong
Thyroid functionOverall function of the thyroid axis.118 rankedStrong
Biotin statusBiochemical sufficiency of biotin.113 rankedStrong
Vitamin A statusBiochemical sufficiency of retinoids or carotenoid-derived vitamin A.119 rankedStrong
Vitamin K statusBiochemical sufficiency of vitamin K.79 rankedStrong
Folate statusBiochemical sufficiency of folate.126 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best prenatal supplements supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 223 products against that goal's trials.