Thyrosol by Metagenics — Ingredients, Evidence & Safety

🟢 100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
91% of ingredients have research evidence

A Label Compliance Grade

Product Label

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Label Data

1 Vegetarian Capsule(s) Serving Size

90 Servings

Other Combinations Product Type

91% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin A

300 mcg (33% DV)

Vitamin D

8.3 mcg (42% DV)

✅ Within RDA (0.6× RDA of 0.015 mg) 📚 604 studies (Tier A: 16, B: 251)

RDA 0.015mg This product: 0.0083mg UL 0.1mg

Vitamin E

44.7 mg (298% DV)

✅ 3.0× RDA — within safe limits 📚 177 studies (Tier A: 3, B: 90)

RDA 15mg This product: 44.7mg UL 1000mg

Riboflavin

2 mg (154% DV)

✅ 1.5× RDA — within safe limits 📚 12 studies (Tier A: 0, B: 1)

RDA 1.3mg This product: 2mg

Niacin

3 mg (19% DV)

✅ Within RDA (0.2× RDA of 14 mg) 📚 193 studies (Tier A: 5, B: 63)

RDA 14mg This product: 3mg UL 35mg

Iodine

50 mcg (33% DV)

✅ Within RDA (0.3× RDA of 0.15 mg) 📚 243 studies (Tier A: 4, B: 133)

RDA 0.15mg This product: 0.05mg UL 1.1mg

Magnesium

33 mg (8% DV)

📊 Market median: 4002.0mg (1 products) 📚 20 studies (Tier A: 0, B: 2)

This product: 33mg

Zinc

6.7 mg (61% DV)

✅ Within RDA (0.6× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)

RDA 11mg This product: 6.7mg UL 40mg

Selenium

50 mcg (91% DV)

✅ Within RDA (0.9× RDA of 0.055 mg) 📚 172 studies (Tier A: 0, B: 67)

RDA 0.055mg This product: 0.05mg UL 0.4mg

Myo-Inositol

200 mg

📊 Market median: 550.0mg (217 products) 📚 29 studies (Tier A: 0, B: 5)

This product: 200mg

Rhodiola (Rhodiola rosea L.) rhizome extract

133 mg

📊 Market median: 300.0mg (122 products) 📚 22 studies (Tier A: 0, B: 7)

This product: 133mg

Other Ingredients

Capsule Microcrystalline Cellulose Magnesium Stearate Silica

Label Claims — Verification

❓ All Other

❓ Structure/Function

All Other (99% of products) Structure/Function (76% of products) Nutrient (58% of products)

Target Groups

Adult (18 - 50 Years) Women (not pregnant or lactating) Gluten Free

Product Information

📋 Directions for Use

Directions: Take one capsule three times daily with food or as directed by your healthcare practitioner.

⚠️ Warnings & Precautions

Warning: Excess vitamin A intake may be toxic and may increase the risk of birth defects. Pregnant women and women who may become pregnant should not exceed 3,000 mcg of preformed vitamin A (retinyl palmitate) per day.

Caution: Not recommended for pregnant or nursing women. If taking medication, consult your healthcare practitioner before use.

Keep out of the reach of children.

Tamper evident: Do not use if safety seal is missing or broken.

🧪 Formulation Notes

Thyrosol offers a multifaceted approach by providing nutritional support for healthy thyroid function along with additional support for stress-related fatigue.

This product is non-GMO and gluten-free.

Thyroid support formula

Additional Information

Storage: Keep tightly closed in a cool, dry place.

GF Certified Gluten-free

New formula

Practitioner exclusive

Product Details

UPC / SKU 7 55571 94997 4

DSLD Entry Date 2020-03-24

Product Type Other Combinations

Form Capsule

Brand Metagenics

DSLD ID 216233

Data Updated 2026-04-11

Research Evidence

337 Research Sources

54 Avg Quality Score

161 Meta Analysis

68 Systematic Review

51 Rct

48 Clinical Trial

2 Other

2 Regulatory Source

1 Narrative Review

1 Cochrane Review

1 Guideline

1 Openfda Safety

A Vitamin A supplementation for preventing morbidity and mortality in children from six months to five years of age

Meta Analysis The Cochrane database of systematic reviews 2017

PubMed DOI Cochrane

A Vitamin A supplementation for the prevention of morbidity and mortality in infants six months of age or less

Meta Analysis The Cochrane database of systematic reviews 2011

PubMed DOI Cochrane

A Vitamin A supplementation for reducing the risk of mother-to-child transmission of HIV infection

Meta Analysis The Cochrane database of systematic reviews 2011

PubMed DOI Cochrane

A Vitamin A supplements for preventing mortality, illness, and blindness in children aged under 5: systematic review and meta-analysis

Meta Analysis BMJ (Clinical research ed.) 2011

PubMed DOI

A Fortification of staple foods with vitamin A for vitamin A deficiency

Systematic Review The Cochrane database of systematic reviews 2019

PubMed DOI Cochrane

A Vitamin A supplementation for the prevention of morbidity and mortality in infants one to six months of age

Narrative Review The Cochrane database of systematic reviews 2016

PubMed DOI Cochrane

A Vitamin A and fish oils for preventing the progression of retinitis pigmentosa

Meta Analysis The Cochrane database of systematic reviews 2020

PubMed DOI

A Exercise training-induced changes in exerkine concentrations may be relevant to the metabolic control of type 2 diabetes mellitus patients: A systematic review and meta-analysis of randomized controlled trials

Meta Analysis Journal of sport and health science 2023

PubMed DOI

A Food fortification with multiple micronutrients: impact on health outcomes in general population

Meta Analysis The Cochrane database of systematic reviews 2019

PubMed DOI

A Oral vitamin A supplements to prevent acute upper respiratory tract infections in children up to seven years of age

Meta Analysis The Cochrane database of systematic reviews 2024

PubMed DOI

View all evidence for Vitamin A →