$18.89 $0.31 per serving
Product analysis
Thyroid Caps supplies nutrients involved in normal thyroid and energy functions, with benefits most relevant when intake is inadequate. Its bovine thyroid ingredient is a specific concern because glandular material can contain undeclared active thyroid hormone, making exposure uncertain.
AI assessment of the formula, label and price. How scoring works
Nutrient Quality48
The iodine form is a strength, while the quality of several other forms remains uncertain. The manganese form lacks clear support, and tyrosine is not fully specified.
Ingredient Transparency76
Ingredient amounts and most forms are listed, helping you compare the formula. Tyrosine form details and the proportions of the magnesium sources remain unspecified.
Value For Money46
The cost comparison is favorable for iodine and manganese but relatively high for tyrosine. Value for much of the remaining formula is uncertain.
Customer Satisfaction81
Customer ratings are very positive across close to a thousand responses. That provides a useful picture of satisfaction, without establishing effectiveness or safety.
Product Focus51
The nutrients support normal needs rather than establishing a boost in metabolism or energy when intake is adequate. The glandular ingredient adds uncertainty because active thyroid hormone exposure may be undeclared.
- Format
Capsule - Container
- 60 VegCap(s)
- Per serving
- $0.31
- Customer rating
- 4.7 · 999 ratings
Goals
Impact
Moderate effect
Iodine · 150 mcgMagnesium · 100 mg
L-Tyrosine Not classified
No linked studies yet.
Impact
Moderate effect
Zinc · 3 mgMagnesium · 100 mg
Ingredients
| Ingredient | Amount per serving | Score |
|---|---|---|
Iodine (Potassium Iodide) | 150 mcg | |
Magnesium (Magnesium Asporotate, Magnesium Oxide) | 100 mg | |
Zinc (Zinc Gluconate) | 3 mg | |
Copper (Copper Asporotate) | 0.1 mg | |
Manganese (Manganese Asporotate) | 3 mg | |
Molybdenum (Molybdenum Glycinate) | 50 mg | |
Thyroid Substance (Bovine) | 150 mg | |
L-Tyrosine | 100 mg |
Iodine (Potassium Iodide) · 150 mcg OverallScore96
The serving provides 150 mcg iodine at a moderate cost per serving. The iodine comes from potassium iodide.
How this ingredient is rated
Active Ingredient Quality & Bioavailability100
The iodine comes from potassium iodide. No marine source is indicated, so seaweed-specific purity concerns do not apply to the stated source.
Iodine Form & Bioavailability
The iodine comes from potassium iodide.
Marine Source Purity & Sourcing
No marine source is indicated, so seaweed-specific purity concerns do not apply to the stated source.
Dose, Safety & Label Transparency100
The serving provides 150 mcg iodine, an amount suited to daily thyroid maintenance. The 150 mcg per serving is below the adult upper intake level of 1,100 mcg.
Dosage Efficacy for Daily Support
The serving provides 150 mcg iodine, an amount suited to daily thyroid maintenance.
Dosage Safety & Upper Limits
The 150 mcg per serving is below the adult upper intake level of 1,100 mcg.
Elemental Iodine Transparency
The iodine amount per serving is stated.
Value80
The cost per serving is moderate.
Price Per Effective Serving
The cost per serving is moderate.
Manganese (Manganese Asporotate) · 3 mg OverallScore50
The serving provides 3 mg of manganese at a moderate cost per serving. The manganese form is unknown, so its absorption and tolerance are unclear.
How this ingredient is rated
Active Ingredient Quality & Bioavailability0
The manganese form is unknown, so its absorption and tolerance are unclear.
Manganese Chemical Form
The manganese form is unknown, so its absorption and tolerance are unclear.
Dose, Safety & Label Transparency86
The serving provides 3 mg of manganese. The manganese amount is stated, but the source is unknown.
Manganese Dosage Efficacy & Safety
The serving provides 3 mg of manganese.
Elemental Weight Disclosure
The manganese amount is stated, but the source is unknown.
Value80
The cost per serving is moderate.
Price per Serving vs. Median
The cost per serving is moderate.
Tyrosine · 100 mg OverallScore50
Each serving provides 100 mg of L-Tyrosine, at a high cost for the amount. The stated form is L-Tyrosine. No additional sourcing or purity information is available.
How this ingredient is rated
Active Ingredient Quality & Bioavailability70
The stated form is L-Tyrosine. No additional sourcing or purity information is available.
Tyrosine Chemical Form
The stated form is L-Tyrosine.
Purity and Sourcing Signals
No additional sourcing or purity information is available.
Dose, Safety & Label Transparency51
The label gives an individual amount of 100 mg of L-Tyrosine per serving.
Tyrosine Dosage Adequacy
Each serving provides 100 mg of L-Tyrosine.
Label Transparency and Blends
The tyrosine amount is individually disclosed.
Value10
The cost for the amount of tyrosine is high.
Price per Gram of Tyrosine
The cost for the amount of tyrosine is high.
Alternative products
Report alternatives
Sources
Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.
- Association of radioactive iodine treatment with survivorship symptoms and primary care utilisation in women of reproductive age with thyroid cancer: a retrospective cohort study.
- Energy level and fatigue after surgery for thyroid cancer: A population-based study of patient-reported outcomes.
- Health-Related Quality of Life in Differentiated Thyroid Cancer Survivors: A Cross-Sectional Study From Turkey.
- Magnesium-L-threonate improves sleep quality and daytime functioning in adults with self-reported sleep problems: A randomized controlled trial.
- Total magnesium intake and risk of frailty in older women.
- Red blood cell magnesium and chronic fatigue syndrome.
- Exercise, magnesium and immune function.
- Iodine Supplementation Decreases Hypercholesterolemia in Iodine-Deficient, Overweight Women: A Randomized Controlled Trial.
- Effect of oral iodized oil on thyroid size and thyroid hormone metabolism in children with concurrent selenium and iodine deficiency.
- Serum Iodine Concentration as a Biomarker for Individual Iodine Nutrition and Thyroid Function in Pregnant Women: A Cross-Sectional Study in Hubei Province.
- Iron status influences the efficacy of iodine prophylaxis in goitrous children in Côte d'Ivoire.
- Persistence of goiter despite oral iodine supplementation in goitrous children with iron deficiency anemia in Côte d'Ivoire.
- Association of magnesium consumption with type 2 diabetes and glucose metabolism: A systematic review and pooled study with trial sequential analysis.
- Magnesium supplementation for glycemic status in women with gestational diabetes: a systematic review and meta-analysis.
- Impact of oral magnesium supplementation on glycemic and cardiometabolic outcomes in prediabetic adults: a systematic review and meta-analysis.
- Oral magnesium supplementation improves insulin sensitivity and metabolic control in type 2 diabetic subjects: a randomized double-blind controlled trial.
- Magnesium Supplementation and the Effects on Wound Healing and Metabolic Status in Patients with Diabetic Foot Ulcer: a Randomized, Double-Blind, Placebo-Controlled Trial.
- The effect of curcumin and zinc co-supplementation on glycemic parameters in overweight or obese prediabetic subjects: A phase 2 randomized, placebo-controlled trial with a multi-arm, parallel-group design.
- Relationship between zinc and glucose metabolism in Japanese adults.
- Zinc and the Innovative Zinc-α2-Glycoprotein Adipokine Play an Important Role in Lipid Metabolism: A Critical Review.