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North Atlantic Kelp

Solgar
4.7
★ ★ ★ ★ ★
(258 ratings)
Iodine 200 mcg
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Score87
A focused iodine option with a regionally identified kelp source at a practical amount. Its value is mainly for inadequate intake, while the supplied ingredient record does not identify the iodine compound.
How scoring works
Quantity:250 Tablet(s) • (250 servings)
Goals:
Energy
Metabolism Boost

Score 87

A focused iodine option with a regionally identified kelp source at a practical amount. Its value is mainly for inadequate intake, while the supplied ingredient record does not identify the iodine compound.
How scoring works
$9.94($0.03 per serving)
Daily Vita
$ 14.84
Pure Formulas
$ 13.49
Vitacost
$ 9.94
Report prices

Analysis

The formula delivers 200 mcg from North Atlantic kelp in a tablet. A regionally identified kelp source at a practical amount.

Iodine supports thyroid-hormone production and may help energy or metabolic function when dietary intake is inadequate. It is not a stimulant, and extra iodine is unlikely to improve these goals when thyroid status is already adequate.

The main limitation is that the supplied ingredient record does not identify the iodine compound. The product is most sensible for adults seeking a moderate North Atlantic kelp supplement, with total iodine intake considered before regular use.

Who is it for
  • adults seeking a moderate North Atlantic kelp supplement
  • people whose diet provides too little iodine
Best for
  • targeted iodine support
  • supporting normal thyroid-hormone production when iodine intake is low

Pros

  • Clearly states an iodine amount of 200 mcg
  • A regionally identified kelp source at a practical amount
  • Tablet keeps use straightforward

Cons

  • The supplied ingredient record does not identify the iodine compound
  • Benefits are conditional on inadequate iodine intake
  • Whole-seaweed iodine can be less consistent than purified iodide

Warnings

  • Seaweed iodine can vary, so avoid adding another iodine supplement without reviewing total intake.
  • Unstated contaminant controls matter for long-term use of a marine-sourced ingredient.
  • People with autoimmune thyroid disease, thyroid nodules, or thyroid-medicine use should obtain condition-specific guidance.

Nutrient quality

90 Highest impact

The regional source supports better kelp traceability and the amount fits routine use. Natural iodine variability remains the main limitation compared with isolated iodide.

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Ingredient transparency

87 Highest impact

The iodine amount and regional kelp source are clearly presented. Complete tablet ingredients and intake directions are not included in the supplied data.

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Customer satisfaction

70 High impact

The supplied average rating is strong and backed by a moderate review pool. No review text is available to assess recurring complaints or firsthand tolerance and ease of use.

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Value for money

98 Highest impact

The suitable dose and clear source strongly justify the low relative cost. The appropriate dose and very low serving cost create excellent practical value.

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Report analysis

Goals

Energy
Impact
Highest effect
B+ Goal FitA Strength of SupportC CoverageA+ Formula Quality
Iodine · 200 mcg

Iodine supports thyroid hormone production, which helps regulate metabolic rate and energy use. The disclosed kelp-derived amount is appropriate for maintenance when iodine intake is low.

Energy benefits are unlikely when iodine status is already adequate, so the formula has a narrow role. People with autoimmune thyroid disease or other thyroid disorders may experience changes in thyroid function from added iodine and should use it with condition-specific guidance.

Study evidence
Iodine Adverse 3 studies
Metabolism Boost
Impact
High effect
B- Goal FitB- Strength of SupportD+ CoverageA+ Formula Quality

Iodine directly supports thyroid hormone production, but it can improve metabolic function only when iodine intake is inadequate. The 200 mcg amount is modestly above the adult daily requirement and is not a general-purpose thermogenic.

The iodine source and quality controls are not stated in the supplied ingredient data. Extra iodine can worsen some thyroid disorders, so people with Hashimoto's disease, Graves' disease, or thyroid medication use should seek medical guidance before taking it.

Study evidence
Iodine Mixed 17 studies

Ingredients

IngredientAmount per serving
Iodine
200 mcg
Gluten Free Adults 18–50 Kosher Dairy Free Sugar Free Vegetarian
Report overview
Iodine · 200 mcg OverallScore96
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value

North Atlantic kelp provides a clearly identified marine iodine source and a daily maintenance dose. The documented regional source reduces concern about poorly characterized seaweed purity, though natural iodine content can vary more than an isolated salt. A simple tablet and very low serving cost make it practical for routine use.

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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. U-Shaped Associations Between Urinary Iodine Concentration and the Prevalence of Metabolic Disorders: A Cross-Sectional Study.
    Jin M; Zhang Z; Li Y; Teng D; Shi X; Ba J; Chen B; Du J; He L; Lai X; Teng X; Li Y; Chi H; Liao E; Liu C; Liu L; Qin G; Qin Y; Quan H; Shi B; Sun H; Tang X; Tong N; Wang G; Zhang JA; Wang Y; Xue Y; Yan L; Yang J; Yang L; Yao Y; Ye Z; Zhang Q; Zhang L; Zhu J; Zhu M; Ning G; Mu Y; Zhao J; Teng W; Shan Z · Thyroid : official journal of the American Thyroid Association · 2021
    Cross-sectional study51,795 participantsMetabolism Boost forIodine
  2. Energy level and fatigue after surgery for thyroid cancer: A population-based study of patient-reported outcomes.
    Hughes DT; Reyes-Gastelum D; Kovatch KJ; Hamilton AS; Ward KC; Haymart MR · Surgery · 2020
    Cohort study2,584 participantsEnergy forIodine
  3. Iodine deficiency and real-life supplementation ineffectiveness in Polish pregnant women and its impact on thyroid metabolism.
    Filipowicz D; Szczepanek-Parulska E; Mikulska-Sauermann AA; Karaźniewicz-Łada M; Główka FK; Szymanowski K; Ołtarzewski M; Schomburg L; Ruchała M · Frontiers in endocrinology · 2023
    Cross-sectional study91 participantsMetabolism Boost forIodine
  4. Association of radioactive iodine treatment with survivorship symptoms and primary care utilisation in women of reproductive age with thyroid cancer: a retrospective cohort study.
    Devanarayan P; Hartman M; Partin M · Family medicine and community health · 2026
    Cohort study10,882 participantsEnergy forIodine
  5. Iodine Supplementation Decreases Hypercholesterolemia in Iodine-Deficient, Overweight Women: A Randomized Controlled Trial.
    Herter-Aeberli I; Cherkaoui M; El Ansari N; Rohner R; Stinca S; Chabaa L; von Eckardstein A; Aboussad A; Zimmermann MB · The Journal of nutrition · 2015
    Randomized trial163 participantsMetabolism Boost forIodine
  6. Health-Related Quality of Life in Differentiated Thyroid Cancer Survivors: A Cross-Sectional Study From Turkey.
    Gültekin A; Kahraman MY; Şengöz T; Şimşek FS · Head & neck · 2026
    Cross-sectional study202 participantsEnergy forIodine
  7. The relationship between excessive iodine during pregnancy and adverse pregnancy complications.
    Li S; Zha H; Cui Y; Sun L; Yu L; Yuan Q · Endocrine · 2025
    Cohort study595 participantsMetabolism Boost forIodine
  8. Effect of oral iodized oil on thyroid size and thyroid hormone metabolism in children with concurrent selenium and iodine deficiency.
    Zimmermann MB; Adou P; Torresani T; Zeder C; Hurrell RF · European journal of clinical nutrition · 2000
    Single-arm trial51 participantsMetabolism Boost forIodine
  9. Serum Iodine Concentration as a Biomarker for Individual Iodine Nutrition and Thyroid Function in Pregnant Women: A Cross-Sectional Study in Hubei Province.
    Xu M; Dai X; Wang Z; Guo C; Zhang B; Guo H · Public health nutrition · 2026
    Cross-sectional study1,197 participantsMetabolism Boost forIodine
  10. Urinary Iodine Concentration and Thyroid Hormone Metabolism in Pregnant Women and Neurodevelopment in Their Children: A Longitudinal Canadian Birth Cohort.
    Berghuis SA; Hall M; Krzeczkowski JE; Goodman CV; Chevrier J; Ayotte P; Lanphear B; Till C · Nutrients · 2025
    Cohort study1,501 participantsMetabolism Boost forIodine
  11. A study on the differences in urinary iodine and serum iodine in relation to children's iodine nutrition and lipids.
    Zhang Y; Xu L; Wang L; Gao H; Hao J; Dong L; Qiu L; Wang J; Yan S; Liu L · Lipids in health and disease · 2026
    Cross-sectional studyMetabolism Boost forIodine
  12. Serum Manganese, Cobalt, Copper, Zinc, Selenium, and Iodine Levels, and the Incidence of Type 2 Diabetes: A Nested Case-control Study.
    Ito A; Yamamoto S; Iwai-Shimada M; Kobayashi Y; Isobe T; Iwai K; Nakayama SF; Konishi M; Watanabe Y; Yamamoto S; Nakagawa T; Yamazaki S; Mizoue T · Biological trace element research · 2026
    Case-control study936 participantsMetabolism Boost forIodine
  13. Iron status influences the efficacy of iodine prophylaxis in goitrous children in Côte d'Ivoire.
    Zimmermann MB · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition · 2002
    OtherMetabolism Boost forIodine
  14. Persistence of goiter despite oral iodine supplementation in goitrous children with iron deficiency anemia in Côte d'Ivoire.
    Zimmermann M; Adou P; Torresani T; Zeder C; Hurrell R · The American journal of clinical nutrition · 2000
    Non-randomized trial109 participantsMetabolism Boost forIodine