Thyroid Support

Thyroid Support

Zoi Research4.7 (1,513 ratings)
Format:Capsule Quantity: 60 Capsule(s) · 30 servings
Goals
$12.03 $0.40 per serving

Product analysis

58 out of 100

Thyroid Support provides iodine and other nutrients that may help when your diet leaves gaps. The broader blend adds ingredients without a clear reason to expect extra energy once nutrient needs are met.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality43

B6 is clearly identified, while mineral quality varies and much of the formula cannot be compared confidently. The proportions of the two magnesium forms are not disclosed.

Ingredient Transparency76

All ingredient amounts and most forms are disclosed, making comparisons easier. The magnesium blend lacks component proportions, and two ingredient forms are omitted.

Value For Money45

Value is mixed across the formula. Bacopa and iodine compare favorably at the serving cost, while selenium is costly and several other ingredients remain uncertain.

Customer Satisfaction83

Customer feedback is strongly positive across a substantial number of ratings. The review base supports a consistent satisfaction pattern without proving thyroid or energy benefits.

Product Focus59

The clearest role is filling nutritional gaps, including iodine needed for normal thyroid function. The large ingredient mix spans several goals, with no established extra energy benefit once intake is adequate.

Format
Capsule
Container
60 Capsule(s)
Per serving
$0.40
Customer rating
4.7 · 1,513 ratings
Report analysis

Goals

Impact
Moderate effect
C Ingredient FitF PathwaysA+ EvidenceA+ Formulation Logic
Vitamin B6 · 15 mgVitamin D · 10 mcgZinc · 10 mgMagnesium · 100 mgGreen Tea · 60 mg
Study evidence
Green Tea Supportive 31 studies
Iodine Mixed 17 studies
Magnesium Supportive 61 studies
Selenium Mixed 28 studies
Vitamin B6 Supportive 16 studies
Vitamin D Supportive 65 studies
Zinc Supportive 12 studies
Everyday Health
Impact
Highest effect
B- Ingredient FitB+ PathwaysA- EvidenceA+ Formulation Logic
Folate · 680 mcg DFEVitamin D · 10 mcgMagnesium · 100 mgSelenium · 100 mcgAshwagandha · 100 mgZinc · 10 mgVitamin C · 30 mg
Study evidence
Folate Supportive 80 studies
Magnesium Supportive 114 studies
Selenium Supportive 70 studies
Vitamin C Supportive 56 studies
Vitamin D Supportive 115 studies
Zinc Supportive 60 studies
Immunity
Impact
High effect
C Ingredient FitB- PathwaysA+ EvidenceA+ Formulation Logic
Magnesium · 100 mgVitamin C · 30 mgZinc · 10 mgVitamin A · 750 mcg RAEVitamin D · 10 mcgSelenium · 100 mcg
Study evidence
Green Tea Not classified 2 studies
Magnesium Supportive 8 studies
Selenium Mixed 37 studies
Vitamin A Supportive 107 studies
Vitamin C Supportive 53 studies
Vitamin D Supportive 85 studies
Zinc Supportive 73 studies
Energy
Impact
Moderate effect
C- Ingredient FitF PathwaysB+ EvidenceA+ Formulation Logic
Iodine · 300 mcgVitamin D · 10 mcgMagnesium · 100 mg
Study evidence
Iodine Adverse 3 studies
Magnesium Supportive 4 studies
Vitamin D Supportive 32 studies
Hair Health
Impact
High effect
C+ Ingredient FitC- PathwaysA+ EvidenceA+ Formulation Logic
Vitamin D · 10 mcgZinc · 10 mgVitamin C · 30 mg
Study evidence
Copper Adverse 4 studies
Folate Mixed 15 studies
Iodine No effect 1 study
Selenium Disputed 7 studies
Vitamin A Disputed 13 studies
Vitamin D Disputed 34 studies
Zinc Supportive 22 studies
Brain Health
Impact
High effect
C Ingredient FitD+ PathwaysA- EvidenceA+ Formulation Logic
Folate · 680 mcg DFEVitamin B6 · 15 mgVitamin D · 10 mcgMagnesium · 100 mgAshwagandha · 100 mgBacopa · 100 mg
Study evidence
Bacopa Supportive 17 studies
Folate Supportive 90 studies
Magnesium Supportive 86 studies
Tyrosine Supportive 7 studies
Vitamin B6 Supportive 29 studies
Vitamin D Supportive 94 studies
Zinc Supportive 38 studies
Skin Health
Impact
High effect
C Ingredient FitB+ PathwaysA- EvidenceA+ Formulation Logic
Zinc · 10 mgVitamin C · 30 mgCopper · 2 mgSelenium · 100 mcgGreen Tea · 60 mg
Study evidence
Copper Supportive 16 studies
Green Tea Supportive 37 studies
Selenium Supportive 22 studies
Vitamin A Supportive 106 studies
Vitamin C Supportive 53 studies
Zinc Supportive 66 studies

Ingredients

IngredientAmount per servingScore
Vitamin A (Vitamin A Palmitate)
750 mcg RAE
Vitamin C (Ascorbic Acid)
30 mg
Vitamin D3 (Cholecalciferol)
10 mcg
Vitamin B6 (Pyridoxine Hydrochloride)
15 mg 80
Folate
680 mcg DFE
Iodine (Kelp)
300 mcg 74
Magnesium (Magnesium Chelate, Magnesium Oxide)
100 mg
Zinc (L-OptiZinc)
10 mg
Selenium (Selenomethionine)
100 mcg 58
Copper (Copper Gluconate)
2 mg 73
L-Tyrosine
500 mg 82
Green Tea Leaf Extract (Polyphenols)
60 mg 40
Gugulipid (Commiphora mukul Resin Extract)
150 mg
Bacopin leaf extract (Bacosides A&B)
100 mg 77
Ashwagandha root extract (Withanolides)
100 mg
Adults 18–50 Dairy Free
Report overview
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
Tyrosine · 500 mg OverallScore82
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD- Value
500 mg of L-Tyrosine per serving is a substantial amount, with a moderately high estimated cost per gram of tyrosine. GMP manufacturing is claimed. The estimate assigns the full serving cost to tyrosine, so it may overstate its cost.
How this ingredient is rated

Active Ingredient Quality & Bioavailability85

It uses L-Tyrosine. GMP-certified manufacturing is claimed, but specific raw material purity details are not available.
Tyrosine Chemical Form
It uses L-Tyrosine.
Purity and Sourcing Signals
GMP-certified manufacturing is claimed, but specific raw material purity details are not available.

Dose, Safety & Label Transparency100

The serving provides 500 mg of L-Tyrosine, a substantial amount, and states the amount and source clearly.
Tyrosine Dosage Adequacy
A serving supplies 500 mg of L-Tyrosine, a substantial amount.
Label Transparency and Blends
The label states the tyrosine amount and source.

Value40

The estimated cost per gram of tyrosine is moderately high; it assigns the full serving cost to tyrosine.
Price per Gram of Tyrosine
The estimated cost per gram of tyrosine is moderately high; it assigns the full serving cost to tyrosine.
C- Active Ingredient Quality & BioavailabilityA- Dose, Safety & Label TransparencyB+ Value
Report alternatives

Sources

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

  1. Acute and Repeated Ashwagandha Supplementation Improves Markers of Cognitive Function and Mood.
    Leonard M; Dickerson B; Estes L; Gonzalez DE; Jenkins V; Johnson S; Xing D; Yoo C; Ko J; Purpura M; Jäger R; Faries M; Kephart W; Sowinski R; Rasmussen CJ; Kreider RB · Nutrients · 2024
    Randomized trial59 participantsBrain Health Energy forAshwagandha
  2. Effect of ashwagandha (Withania somnifera) extract with Sominone (Somin-On™) to improve memory in adults with mild cognitive impairment: A randomized, double-blind, placebo-controlled study.
    Rai HP; Mishra DN · Journal of psychopharmacology (Oxford, England) · 2025
    Randomized trial40 participantsBrain Health forAshwagandha
  3. Efficacy of Withania somnifera supplementation on adult's cognition and mood.
    Remenapp A; Coyle K; Orange T; Lynch T; Hooper D; Hooper S; Conway K; Hausenblas HA · Journal of Ayurveda and integrative medicine · 2022
    Randomized trial60 participantsBrain Health forAshwagandha
  4. A clinical assessment of the therapeutic effects of Ashwagandha root extract on cognitive performance, sleep, and fatigue in children aged 6-12 years.
    Saxena A; Lopresti A; Sharif M; Elon N; Suri R; Langade DK · Frontiers in nutrition · 2026
    Randomized trial85 participantsBrain Health forAshwagandha
  5. Efficacy and Safety of Ashwagandha Root Extract on Cognitive Functions in Healthy, Stressed Adults: A Randomized, Double-Blind, Placebo-Controlled Study.
    Gopukumar K; Thanawala S; Somepalli V; Rao TSS; Thamatam VB; Chauhan S · Evidence-based complementary and alternative medicine : eCAM · 2022
    Randomized trial130 participantsBrain Health forAshwagandha
  6. Comparative effects of Bacopa monnieri and Ginkgo biloba on cognitive functions: A systematic review and network meta-analysis.
    Tiemtad P; Ingkaninan K; Temkitthawon P; Thimkorn P; Rattanachaisit N; Teaktong T; Dhippayom T · Phytomedicine : international journal of phytotherapy and phytopharmacology · 2026
    Meta-analysis2,107 participants29 studies pooledBrain Health forBacopa
  7. Meta-analysis of randomized controlled trials on cognitive effects of Bacopa monnieri extract.
    Kongkeaw C; Dilokthornsakul P; Thanarangsarit P; Limpeanchob N; Norman Scholfield C · Journal of ethnopharmacology · 2014
    Meta-analysis518 participants9 studies pooledBrain Health forBacopa
  8. Comparative efficacy of Medhya Rasayana,Bacopa monnieri, and Centella asiatica in enhancing memory and IQ of 8-10 year-old healthy boys: A prakriti-based double-blind, randomized controlled trial.
    Verma J; Rathi R; Anamika; Rathi B; Pandey VB · Journal of Ayurveda and integrative medicine · 2025
    Randomized trial180 participantsBrain Health forBacopa
  9. Plant-derived nootropics and human cognition: A systematic review.
    Lorca C; Mulet M; Arévalo-Caro C; Sanchez MÁ; Perez A; Perrino M; Bach-Faig A; Aguilar-Martínez A; Vilella E; Gallart-Palau X; Serra A · Critical reviews in food science and nutrition · 2023
    Systematic review256 studies pooledBrain Health forBacopa
  10. The effect of plant active substances on cognitive function in healthy older adults: a systematic review and network meta-analysis of randomized controlled trials.
    Feng X; Fan S; Wei F · Frontiers in pharmacology · 2026
    Meta-analysis1,861 participants25 studies pooledBrain Health forBacopa
  11. B vitamins and prevention of cognitive decline and incident dementia: a systematic review and meta-analysis.
    Wang Z; Zhu W; Xing Y; Jia J; Tang Y · Nutrition reviews · 2022
    Meta-analysis46,175 participants95 studies pooledBrain Health forFolate
  12. Folate and long-chain polyunsaturated fatty acid supplementation during pregnancy has long-term effects on the attention system of 8.5-y-old offspring: a randomized controlled trial.
    Catena A; Muñoz-Machicao JA; Torres-Espínola FJ; Martínez-Zaldívar C; Diaz-Piedra C; Gil A; Haile G; Györei E; Molloy AM; Decsi T; Koletzko B; Campoy C · The American journal of clinical nutrition · 2016
    Randomized trial136 participantsBrain Health forFolate
  13. Folic acid supplementation improves cognitive function in participants with cerebral small vascular disease-related cognitive impairment: a randomized controlled trial.
    Liu Y; Yu Z; Cai Z; Zhao L; Wang Y; Guo Y; Su X; Miao Y; Yi B; Wang Y; Zhang X · The journal of prevention of Alzheimer's disease · 2025
    Randomized trial220 participantsBrain Health forFolate
  14. Circulating folate concentrations and the risk of mild cognitive impairment: A prospective study on the older Chinese population without folic acid fortification.
    Fu J; Liu Q; Zhu Y; Sun C; Duan H; Huang L; Zhou D; Wang Z; Zhao J; Li Z; Ma F; Li W; Liu H; Zhang X; Chen Y; Wang G; Du Y; Huang G · European journal of neurology · 2022
    Cohort study3,974 participantsBrain Health forFolate
  15. Normal-But-Low Serum Folate Levels and the Risks for Cognitive Impairment.
    Jang S; Han JW; Shin J; Kim TH; Kwak KP; Kim K; Kim BJ; Kim SG; Kim JL; Kim TH; Moon SW; Park JY; Park JH; Byun S; Suh SW; Seo J; So Y; Ryu SH; Youn JC; Lee KH; Lee DY; Lee DW; Lee SB; Lee JJ; Lee JR; Jeong H; Jeong HG; Jhoo JH; Han K; Hong JW; Kim KW · Psychiatry investigation · 2020
    Cohort study3,910 participantsBrain Health forFolate
  16. Antenatal magnesium sulfate and neuroprotection.
    Doyle LW · Current opinion in pediatrics · 2012
    Meta-analysis6,145 participants5 studies pooledBrain Health forMagnesium
  17. No. 376-Magnesium Sulphate for Fetal Neuroprotection.
    Magee LA; De Silva DA; Sawchuck D; Synnes A; von Dadelszen P · Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC · 2020
    Guideline / consensus4,446 participantsBrain Health forMagnesium
  18. Magnesium Sulfate Before Preterm Birth for Neuroprotection: An Updated Cochrane Systematic Review.
    Shepherd ES; Goldsmith S; Doyle LW; Middleton P; Marret S; Rouse DJ; Pryde P; Wolf HT; Crowther CA · Obstetrics and gynecology · 2024
    Systematic review5,917 participants6 studies pooledBrain Health forMagnesium
  19. Magnesium sulphate for fetal neuroprotection at imminent risk for preterm delivery: a systematic review with meta-analysis and trial sequential analysis.
    Wolf HT; Huusom LD; Henriksen TB; Hegaard HK; Brok J; Pinborg A · BJOG : an international journal of obstetrics and gynaecology · 2020
    Meta-analysis5,917 participants6 studies pooledBrain Health forMagnesium
  20. Magnesium sulfate and fetal neuroprotection: overview of clinical evidence.
    Chollat C; Marret S · Neural regeneration research · 2020
    Narrative reviewBrain Health forMagnesium