Everything DoseRank tracks on the algae shelf — Iodine and Kelp. The category itself is never ranked: 288 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 algae 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.
Iodine statusBiochemical sufficiency of iodine.112 rankedStrong
Thyroid functionOverall function of the thyroid axis.103 rankedStrong
FerritinMarker of iron stores.93 rankedStrong
HemoglobinBlood oxygen-carrying protein concentration.93 rankedStrong
HalitosisBad breath or unpleasant oral odor.21 rankedModerate-strong
Lean body massNon-fat body mass, often used as a marker of preserved musculature.103 rankedStrong
Macular pigment optical densityRetinal pigment measure sometimes used in lutein/zeaxanthin studies.27 rankedStrong
Vitamin A statusBiochemical sufficiency of retinoids or carotenoid-derived vitamin A.48 rankedStrong
Anemia statusPresence of clinically meaningful low red cell mass or hemoglobin.96 rankedStrong
ThermogenesisHeat production and metabolic energy expenditure.117 rankedStrong
Resting energy expenditureCalories burned at rest; marker of basal metabolism.113 rankedStrong
Sodium statusBody sodium balance.79 rankedStrong
Delayed-onset muscle sorenessPost-exercise muscle pain and stiffness.122 rankedModerate-strong
PhotosensitivityAbnormal skin sensitivity to sunlight or light exposure.31 rankedModerate-strong
Coagulation statusOverall blood clotting tendency.19 rankedStrongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best algae supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 288 products against that goal's trials.