Collagen Biotin Gummies by Double Wood Supplements — Ingredients, Evidence & Safety

Product Label

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Label Data

2 Gummy(ies) Serving Size

30 Servings

Other Combinations Product Type

57% Evidence Coverage

Supplement Facts — Evidence Check

Calories

15 Calorie(s)

Total Carbohydrates

3 Gram(s) (1% DV)

Vitamin C

50 mg (55% DV)

Vitamin E

5 mg (33% DV)

✅ Within RDA (0.3× RDA of 15 mg) 📚 177 studies (Tier A: 3, B: 90)

RDA 15mg This product: 5mg UL 1000mg

Biotin

2500 mg (8333% DV)

📊 83333.3× RDA — above typical dose 📚 26 studies (Tier A: 0, B: 11)

RDA 0.03mg This product: 2500mg

Zinc

5 mg (45% DV)

✅ Within RDA (0.5× RDA of 11 mg) 📚 258 studies (Tier A: 6, B: 134)

RDA 11mg This product: 5mg UL 40mg

Collagen, Hydrolyzed

200 mg

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

This product: 200mg

Other Ingredients

Tapioca Syrup Cane Sugar Water Pectin Citric Acid Sodium Citrate Fruit and Vegetable Juice Natural flavor Carnauba Wax Coconut Oil

Label Claims — Verification

❓ Nutrient

❓ All Other

❓ Structure/Function

All Other (99% of products) Structure/Function (95% of products) Nutrient (80% of products)

Target Groups

Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Suggested use: As a supplement for hair, nail, or skin health we recommend taking 2 gummies per day with or without food. It is not recommended to exceed 6 gummies per day.

⚠️ Warnings & Precautions

Warning: Consult your physician before use. Discontinue use and consult your doctor immediately if any adverse reactions occur. Do not use collagen + biotin gummies and operate heavy machinery until you know how it affects you.

Keep out of reach of children.

Contains: Tree nuts (coconut).

🧪 Formulation Notes

Collagen and biotin work together to support hair, nail, and skin health.

Max strength

Supports hair - skin - nails

Additional Information

Storage: Store in a cool, dry place. Do not freeze or expose to moisture or heat above room temperature.

Product Details

UPC / SKU 8 50033 27200 0

DSLD Entry Date 2023-06-22

Product Type Other Combinations

Form Gummy or Jelly

Brand Double Wood Supplements

DSLD ID 286148

Data Updated 2026-04-11

Research Evidence

281 Research Sources

54 Avg Quality Score

141 Meta Analysis

72 Systematic Review

45 Rct

18 Clinical Trial

2 Narrative Review

1 Other

1 Guideline

1 Openfda Safety

A Vascular closure devices for femoral arterial puncture site haemostasis

Meta Analysis The Cochrane database of systematic reviews 2016

PubMed DOI

B Effects of Oral Collagen for Skin Anti-Aging: A Systematic Review and Meta-Analysis

Meta Analysis Nutrients 2023

PubMed DOI

B Transepithelial versus epithelium-off corneal crosslinking for progressive keratoconus

Meta Analysis The Cochrane database of systematic reviews 2021

PubMed DOI

B Bisphosphonate therapy for osteogenesis imperfecta

Meta Analysis The Cochrane database of systematic reviews 2014

PubMed DOI

B Punctal occlusion for dry eye syndrome

Meta Analysis The Cochrane database of systematic reviews 2017

PubMed DOI

B Dressings and topical agents containing hyaluronic acid for chronic wound healing

Systematic Review The Cochrane database of systematic reviews 2023

PubMed DOI

B Efficacy of statins for osteoporosis: a systematic review and meta-analysis

Meta Analysis Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA 2017

PubMed DOI

B Drugs to reduce bleeding and transfusion in major open vascular or endovascular surgery: a systematic review and network meta-analysis

Systematic Review The Cochrane database of systematic reviews 2023

PubMed DOI

B Bisphosphonate therapy for osteogenesis imperfecta

Meta Analysis The Cochrane database of systematic reviews 2008

PubMed DOI

B Bisphosphonates for osteoporosis in primary biliary cirrhosis

Meta Analysis The Cochrane database of systematic reviews 2011

PubMed DOI

View all evidence for Collagen →