Ultra NourishHair by GNC Men's — Ingredients, Evidence & Safety

🟢 90/100

This product looks safe

Contains proprietary blend — exact ingredient amounts not disclosed
62% of ingredients have research evidence

A Label Compliance Grade

Product Label

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Safety Alerts

ℹ️ Contains proprietary blend — exact ingredient amounts not disclosed

Label Data

2 Caplet(s) Serving Size

60 Servings

Other Combinations Product Type

62% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin A

1000 IU (20% DV)

Vitamin C

30 mg (50% DV)

Vitamin E

10 IU (33% DV)

✅ Within RDA (0.4× RDA of 15 mg) 📚 177 studies (Tier A: 3, B: 90)

RDA 15mg This product: 6.7mg UL 1000mg

Thiamine

1.5 mg (100% DV)

✅ 1.2× RDA — within safe limits 📚 76 studies (Tier A: 0, B: 33)

RDA 1.2mg This product: 1.5mg

Riboflavin

1.7 mg (100% DV)

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

RDA 1.3mg This product: 1.7mg

Niacin

25 mg (125% DV)

✅ 1.8× RDA — within safe limits 📚 193 studies (Tier A: 5, B: 63)

RDA 14mg This product: 25mg UL 35mg

Vitamin B6

2 mg (100% DV)

✅ 1.5× RDA — within safe limits 📚 113 studies (Tier A: 3, B: 35)

RDA 1.3mg This product: 2mg UL 100mg

Folic Acid

400 mcg (100% DV)

✅ Within RDA (1.0× RDA of 0.4 mg) 📚 225 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 0.4mg UL 1.0mg

Vitamin B12

6 mcg (100% DV)

✅ 2.5× RDA — within safe limits 📚 138 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 0.006mg

Biotin

2000 mcg (667% DV)

📊 66.7× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)

RDA 0.03mg This product: 2.0mg

Pantothenic Acid

50 mg (500% DV)

📊 10.0× RDA — above typical dose 📚 1 studies — no high-quality reviews

RDA 5mg This product: 50mg

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

15 mg (4% DV)

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

This product: 15mg

Zinc

15 mg (100% DV)

✅ 1.4× RDA — within safe limits 📚 258 studies (Tier A: 6, B: 134)

RDA 11mg This product: 15mg UL 40mg

Copper

1 mg (50% DV)

✅ 1.1× RDA — within safe limits 📚 36 studies (Tier A: 0, B: 11)

RDA 0.9mg This product: 1mg UL 10mg

Silica

2 mg

📊 Market median: 108.0mg (8 products) 📚 9 studies (Tier A: 0, B: 4)

This product: 2mg

Boron

1 mg

📊 Market median: 3.0mg (58 products) 📚 2 studies — no high-quality reviews

This product: 1mg UL 20mg

L-Cysteine

100 mg

Choline

250 mcg

📊 Market median: 125.0mg (294 products) 📚 36 studies (Tier A: 1, B: 7)

RDA 550mg This product: 0.25mg UL 3500mg

Inositol

50 mcg

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

This product: 0.05mg

hydrolyzed Gelatin

25 mg

Natural Amino Complex

50 mg

Cayenne pepper

10 mg

Proprietary Herbal Blend

20 mg

Other Ingredients

Cellulose Dicalcium Phosphate Titanium Dioxide Food Glaze Vegetable Acetoglycerides

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

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

Target Groups

Adult Male (18-50 Years) Gluten Free Sugar Free

Product Information

📋 Directions for Use

Directions: As a dietary supplement, take two caplets daily. For maximum benefits, take as directed every day.

⚠️ Warnings & Precautions

Keep out of reach of children.

Contains: Milk.

Warning: Consult your physician prior to using this product if you are pregnant, nursing, taking medication, or have a medical condition.

Discontinue use two weeks prior to surgery.

🧪 Formulation Notes

No sugar, no artificial colors, no artificial flavors, no preservatives, sodium free, no wheat, gluten free, yeast free.

"Packed with biotin and silica, Ultra NourishHair supports the hair matrix from the inside out."

Biotin Features 2,000 mcg of biotin per serving to support normal cell growth in the hair matrix. Biotin is an essential vitamin known to promote healthy hair and normal cell growth. Amino Acid Complex Features a natural amino acid complex with hydrolyzed gelatin, a natural source of collagen. Amino acids are the building blocks and repair of tissue. Proprietary Herbal Blend Includes a proprietary herbal blend that supplies many beneficial herbs such as juniper berries and horsetail.

Premium formula for men

2,000 mcg of biotin Natural amino acid complex Proprietary herbal blend

Contains: Milk.

Additional Information

Store in a cool, dry place.

Actual size

GNC quality commitment For more than 79 years, GNC has been the leader in the development of superior nutritional supplements. Our products are produced using only fresh, high-quality ingredients and are manufactured under the strictest quality controls.

GNC guarantee If you are not 100% completely satisfied, return the unused portion of the product with your receipt to a GNC store within 30 days. Our trained sales staff will either refund your purchase price or, if you prefer, assist you in finding a replacement product to help you live well.

Please recycle this box.

Gf Gluten free

Antioxidant Protection Provides antioxidant nutrients that help protect the body from harmful free radicals that can promote the cell aging process.

Supports the structural foundation of strong, healthy hair

Antioxidants to fight cell aging

CODE 247721 JNG

Physician endorsed

Product Details

DSLD Entry Date 2017-07-25

Product Type Other Combinations

Form Other (e.g. tea bag)

Brand GNC Men's

DSLD ID 76009

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 →