Hair + Beard Growth by Rainbow Nutrients — Ingredients, Evidence & Safety

🟢 98/100

This product looks safe

Folate: 568mg is 568.0× the Tolerable Upper Intake Level (1.0mg)
62% of ingredients have research evidence

C Label Compliance Grade

Product Label

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Safety Alerts

⚠️ Folate: 568mg is 568.0× the Tolerable Upper Intake Level (1.0mg)

Label Data

2 Capsule(s) Serving Size

60 Servings

Other Combinations Product Type

62% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin A

2700 mcg (300% DV)

Vitamin C

100 mg (111% DV)

Vitamin D3

2.5 mcg (13% DV)

✅ Within RDA (0.2× RDA of 0.015 mg) 📚 604 studies (Tier A: 16, B: 251)

RDA 0.015mg This product: 0.0025mg UL 0.1mg

Vitamin E

10 mg (67% DV)

✅ Within RDA (0.7× RDA of 15 mg) 📚 177 studies (Tier A: 3, B: 90)

RDA 15mg This product: 10mg UL 1000mg

Thiamine

5 mg (417% DV)

📊 4.2× RDA — above typical dose 📚 76 studies (Tier A: 0, B: 33)

RDA 1.2mg This product: 5mg

Riboflavin

5 mg (385% DV)

📊 3.8× RDA — above typical dose 📚 12 studies (Tier A: 0, B: 1)

RDA 1.3mg This product: 5mg

Vitamin B6

5 mg (294% DV)

📊 3.8× RDA — above typical dose (UL: 100 mg) 📚 113 studies (Tier A: 3, B: 35)

RDA 1.3mg This product: 5mg UL 100mg

Folate

568 mcg DFE (142% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 568.0× (UL: 1.0 mg) 📚 225 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 568mg UL 1.0mg

Vitamin B12

20 mcg (833% DV)

📊 8.3× RDA — above typical dose 📚 138 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 0.02mg

Biotin

10000 mcg (33333% DV)

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

RDA 0.03mg This product: 10.0mg

Pantothenic Acid

100 mg (2000% DV)

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

RDA 5mg This product: 100mg

Zinc

15 mg (136% DV)

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

RDA 11mg This product: 15mg UL 40mg

OptiMSM

400 mg

Bovine Collagen, Hydrolyzed

200 mg

📊 Market median: 20.0mg (931 products) 📚 233 studies (Tier A: 1, B: 90)

This product: 200mg

Medium Chain Triglyceride

100 mg

Ultimate Hair + Beard Proprietary Complex

300 mg

Other Ingredients

Hypromellose Nu-Flow

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) Seniors/Mature (>50 Years) - Men ONLY

Product Information

📋 Directions for Use

Suggested use Take 2 capsules once a day or as directed by your healthcare professional. For best results, take daily for at least 45-60 consecutive days or results may diminish.

⚠️ Warnings & Precautions

Keep our of reach of children.

Do not use if safety seal is damaged or missing.

Caution Pregnant or nursing mothers, children under the age of 18 and individuals with a known medical condition should consult with a physician before using this or any dietary supplement.

🧪 Formulation Notes

10,000 Biotin with OptiMSM goMCT

Supports hair regrowth Thicker & manlier beard Fights against hair loss

For men

Zero added GMO's, antibiotics, preservatives, gluten, stearates, dioxides, shellfish, dairy, soy & wheat

Made with Non GMO ingredients

Professional grade

Additional Information

Store in a cool & dry place.

60 day supply

LAB tested 3rd party certified for purity & potency Made in the USA from globally sourced ingredients GMPc Facility Good manufacturing practice certification

Product Details

UPC / SKU X0037XLYXZ

DSLD Entry Date 2024-12-21

Product Type Other Combinations

Form Capsule

Brand Rainbow Nutrients

DSLD ID 319990

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 →