Thyroid Health Formula

Thyroid Health Formula

Natural Factors4.8 (3,832 ratings)
Format:Capsule Quantity: 60 Capsule(s) · 30 servings
Goals
$10.47 $0.34 per serving

Product analysis

54 out of 100

Thyroid Health Formula combines minerals, vitamin B5 and plant ingredients for a thyroid-focused supplement. Missing details about several preparations make close comparisons harder.

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

Nutrient Quality25

Vitamin B5 has a favorable identified form, while the other ingredients offer less clarity about quality. Tyrosine and the plant ingredients lack specified forms.

Ingredient Transparency86

All ingredient amounts are stated, making the serving contents easy to check. Forms are missing for tyrosine, ashwagandha and guggul.

Value For Money41

Value varies considerably between ingredients: copper is reasonably priced, while vitamin B5 is expensive for the amount supplied. Tyrosine also offers limited value, and several other contributions remain uncertain.

Customer Satisfaction90

Customer feedback is very positive across thousands of reviews. The large review history provides a substantial basis for the satisfaction pattern.

Product Focus47

The combination targets thyroid health, but support for its intended result is limited. A broader ingredient mix does not by itself establish a better outcome.

Format
Capsule
Container
60 Capsule(s)
Per serving
$0.34
Customer rating
4.8 · 3,832 ratings
Report analysis

Goals

Brain Health
Impact
Lower effect
D Ingredient FitF PathwaysD EvidenceA+ Formulation Logic
Ashwagandha · 150 mg
Study evidence
Tyrosine Supportive 7 studies

Ingredients

IngredientAmount per servingScore
Pantothenic Acid (Calcium Pantothenate)
100 mg 70
Iodine (Potassium Iodide)
100 mcg
Selenium (L-Selenomethionine)
50 mcg
Copper (Copper Gluconate)
0.5 mg 51
Manganese (Manganese Citrate)
0.5 mg
L-Tyrosine
500 mg 82
Ashwagandha extract
150 mg 85
Guggul extract
120 mg
Gluten Free Adults 18–50 Vegan Dairy Free Sugar Free Vegetarian
Report overview
Tyrosine · 500 mg OverallScore82
A- Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD- Value
The serving provides 500 mg of L-Tyrosine at a moderately high cost per gram. The amount falls in the range described for acute cognitive support. GMP manufacturing is claimed, though raw material purity details are limited.
How this ingredient is rated

Active Ingredient Quality & Bioavailability85

The ingredient is L-Tyrosine, a standard form used to raise tyrosine levels. GMP manufacturing is claimed, but specific raw material purity data is not available.
Tyrosine Chemical Form
The ingredient is L-Tyrosine, a standard form used to raise tyrosine levels.
Purity and Sourcing Signals
GMP manufacturing is claimed, but specific raw material purity data is not available.

Dose, Safety & Label Transparency100

500 mg of tyrosine per serving falls in the range described for acute cognitive support. The amount is stated per serving.
Tyrosine Dosage Adequacy
500 mg of tyrosine per serving falls in the range described for acute cognitive support.
Label Transparency and Blends
The 500 mg amount per serving is stated.

Value40

The cost per gram of tyrosine is moderately high.
Price per Gram of Tyrosine
The cost per gram of tyrosine is moderately high.
A Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyF Value
Each serving provides 100 mg of vitamin B5, with a high cost for the B5 amount. The stated source is Calcium Pantothenate, a stable salt form.
How this ingredient is rated

Active Ingredient Quality & Bioavailability90

The B5 comes from Calcium Pantothenate, a stable salt form.
Vitamin B5 Chemical Form
The B5 comes from Calcium Pantothenate, a stable salt form.

Dose, Safety & Label Transparency76

Each serving provides 100 mg of vitamin B5. The amount and source are stated.
Dosage Potency and Efficacy
Each serving provides 100 mg of vitamin B5.
Label Transparency & Source Clarity
The B5 amount and its Calcium Pantothenate source are stated.

Value20

The cost for the amount of B5 is high.
Price per 500mg Vitamin B5
The cost for the amount of B5 is high.
C- Active Ingredient Quality & BioavailabilityF Dose, Safety & Label TransparencyB+ Value
The serving provides 0.5 mg of copper, a small contribution, at a moderate cost per serving. Copper comes from copper gluconate. The zinc amount is unknown.
How this ingredient is rated

Active Ingredient Quality & Bioavailability58

Copper comes from copper gluconate. The elemental copper amount is stated on the label.
Copper Form Bioavailability
Copper comes from copper gluconate.
Elemental Copper Labeling Clarity
The label states 0.5 mg of elemental copper and its source.

Dose, Safety & Label Transparency29

The serving contains 0.5 mg of copper, a small contribution. The amount of zinc is not available, so the zinc-to-copper balance is unclear.
Copper Dosage Safety & Efficacy
The selected serving provides 0.5 mg of copper, a small contribution.
Zinc-to-Copper Balance
The amount of zinc is not available, so the zinc-to-copper balance is unclear.

Value80

The cost per serving is moderate.
Price Per Serving Efficiency
The cost per serving is moderate.
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 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. Combined L-carnosine and L-tyrosine supplementation as an ergogenic strategy for physical and cognitive performance under fatigue in professional football players.
    Bilgin S; Bozyılan E; Buzdağlı Y; Karaç Öcal Y; Gürkan O; Toktaş S; İnan H; Egil İ; Yarayan YE · Frontiers in nutrition · 2026
    Randomized trial24 participantsBrain Health forTyrosine
  7. Effect of tyrosine supplementation on clinical and healthy populations under stress or cognitive demands--A review.
    Jongkees BJ; Hommel B; Kühn S; Colzato LS · Journal of psychiatric research · 2016
    Narrative reviewBrain Health forTyrosine
  8. Influence of nutritional tyrosine on cognition and functional connectivity in healthy old humans.
    Hensel C; Becker M; Düzel S; Demuth I; Norman K; Steinhagen-Thiessen E; Gallinat J; Lindenberger U; Kühn S · NeuroImage · 2019
    Cross-sectional study286 participantsBrain Health forTyrosine
  9. Dietary Tyrosine Intake (FFQ) Is Associated with Locus Coeruleus, Attention and Grey Matter Maintenance: An MRI Structural Study on 398 Healthy Individuals of the Berlin Aging Study-II.
    Plini ERG; Melnychuk MC; Harkin A; Dahl MJ; McAuslan M; Kühn S; Boyle RT; Whelan R; Andrews R; Düzel S; Drewelies J; Wagner GG; Lindenberger U; Norman K; Robertson IH; Dockree PM · The journal of nutrition, health & aging · 2023
    Cross-sectional study398 participantsBrain Health forTyrosine
  10. Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating.
    Jongkees BJ · Cognitive, affective & behavioral neuroscience · 2021
    Randomized trial45 participantsBrain Health forTyrosine