Is 50 mcg of Vitamin D safe?

This is 3.3× the recommended daily intake of 0.015 mg. While above typical doses, it may still be within safe limits (UL: 0.1 mg).

Is 50 mg of Thiamine safe?

This is 41.7× the recommended daily intake of 1.2 mg. While above typical doses, it may still be within safe limits (UL: None mg).

Is 50 mg of Riboflavin safe?

This is 38.5× the recommended daily intake of 1.3 mg. While above typical doses, it may still be within safe limits (UL: None mg).

Vitamins for the Hair Timed Release by Puritan's Pride — Ingredients, Evidence & Safety

🟢 96/100

This product looks safe

Niacin: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)
Folate: 666mg is 666.0× the Tolerable Upper Intake Level (1.0mg)
65% of ingredients have research evidence

D Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This formula contains essential vitamins such as A, C, and D, which support general cellular function and skin health. Research provides strong evidence for the role of B vitamins like thiamine and riboflavin in metabolic processes. Overall evidence coverage for this specific combination is limited.

AI-generated summary based on research evidence. Not medical advice.

Product Label

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Safety Alerts

⚠️ Niacin: 50mg is 1.4× the Tolerable Upper Intake Level (35mg)

⚠️ Folate: 666mg is 666.0× the Tolerable Upper Intake Level (1.0mg)

Label Data

3 Caplet(s) Serving Size

30 Servings

Other Combinations Product Type

65% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin A

1500 mcg (167% DV)

Vitamin C

500 mg (556% DV)

Vitamin D

50 mcg (250% DV)

📊 3.3× RDA — above typical dose (UL: 0.1 mg) 📚 608 studies (Tier A: 16, B: 251)

RDA 0.015mg This product: 0.05mg UL 0.1mg

Thiamine

50 mg (4167% DV)

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

RDA 1.2mg This product: 50mg

Riboflavin

50 mg (3846% DV)

📊 38.5× RDA — above typical dose 📚 13 studies (Tier A: 0, B: 1)

RDA 1.3mg This product: 50mg

Niacin

50 mg (313% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 1.4× (UL: 35 mg) 📚 196 studies (Tier A: 5, B: 63)

RDA 14mg This product: 50mg UL 35mg

Vitamin B6

50 mg (2941% DV)

📊 38.5× RDA — above typical dose (UL: 100 mg) 📚 114 studies (Tier A: 3, B: 35)

RDA 1.3mg This product: 50mg UL 100mg

Folate

666 mcg DFE (167% DV)

⚠️ Exceeds Tolerable Upper Intake Level by 666.0× (UL: 1.0 mg) 📚 226 studies (Tier A: 10, B: 105)

RDA 0.4mg This product: 666mg UL 1.0mg

Vitamin B12

100 mcg (4167% DV)

📊 41.7× RDA — above typical dose 📚 139 studies (Tier A: 1, B: 44)

RDA 0.0024mg This product: 0.1mg

Biotin

10000 mcg (33333% DV)

📊 333.3× RDA — above typical dose 📚 27 studies (Tier A: 0, B: 11)

RDA 0.03mg This product: 10.0mg

Zinc

5 mg (45% DV)

✅ Within RDA (0.5× RDA of 11 mg) 📚 263 studies (Tier A: 6, B: 134)

RDA 11mg This product: 5mg UL 40mg

Copper

2 mg (222% DV)

✅ 2.2× RDA — within safe limits 📚 37 studies (Tier A: 0, B: 11)

RDA 0.9mg This product: 2mg UL 10mg

Inositol

100 mg

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

This product: 100mg

PABA

100 mg

📊 Market median: 500.0mg (9 products) 📚 7 studies — no high-quality reviews

This product: 100mg

L-Cystine

100 mg

Horsetail

100 mg

MSM

100 mg

📊 Market median: 1000.0mg (2 products)

This product: 100mg

Other Ingredients

Dicalcium Phosphate Cellulose Stearic Acid Choline Bitartrate Silica natural Palm leaf glaze Magnesium Stearate

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)

Product Information

📋 Directions for Use

Directions: For adults, take three (3) caplets daily, preferably with a meal.

⚠️ Warnings & Precautions

Warning: If you are pregnant, nursing, taking any medications, have any medical condition, or are planning to undergo any clinical lab testing, consult your doctor before use. Some supplements may interact with certain medications and/or interfere with certain lab tests.

It is advisable to consult your doctor before using biotin doses above 2,500 mcg per day. Discontinue use and consult your doctor if any adverse reactions occur.

Not intended for use by persons under the age of 18. Keep out of reach of children.

Do not use if seal under cap is broken or missing.

Contains bioengineered food ingredients.

🧪 Formulation Notes

Maximum potency Nutritional support for healthy hair Beauty from within

Additional Information

Store at room temperature.

To reorder item #2711 www.puritan.com 1-800-645-1030

QA Quality Assured

Product Details

UPC / SKU 0 74312 12711 3

DSLD Entry Date 2023-05-24

Product Type Other Combinations

Form Other (e.g. tea bag)

Brand Puritan's Pride

DSLD ID 285465

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 →