Ultra Collagen with Horsetail Concentrate by Mason Natural — Ingredients, Evidence & Safety

🟢 100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
53% of ingredients have research evidence

A Label Compliance Grade

Product Label

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Label Data

2 Capsule(s) Serving Size

50 Servings

Other Combinations Product Type

53% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C

60 mg (70% DV)

Vitamin E

27 mg (180% DV)

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

RDA 15mg This product: 27mg UL 1000mg

D-Biotin

2500 mcg (8330% DV)

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

RDA 0.03mg This product: 2.5mg

Calcium

225 mg (15% DV)

Zinc

15 mg (140% DV)

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

RDA 11mg This product: 15mg UL 40mg

Selenium

150 mcg (270% DV)

✅ 2.7× RDA — within safe limits 📚 172 studies (Tier A: 0, B: 67)

RDA 0.055mg This product: 0.15mg UL 0.4mg

Copper

2 mg (220% DV)

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

RDA 0.9mg This product: 2mg UL 10mg

Manganese

4 mg (170% DV)

✅ 1.7× RDA — within safe limits 📚 8 studies — no high-quality reviews

RDA 2.3mg This product: 4mg UL 11mg

Choline

100 mg (20% DV)

✅ Within RDA (0.2× RDA of 550 mg) 📚 36 studies (Tier A: 1, B: 7)

RDA 550mg This product: 100mg UL 3500mg

Collagen Complex

725 mg

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

This product: 725mg

Horsetail concentrate

200 mg

Fo Ti concentrate

100 mg

L-Methionine

25 mg

📊 Market median: 500.0mg (193 products) 📚 7 studies — no high-quality reviews

This product: 25mg

N-Acetyl L-Cysteine

25 mg

Silicon

12 mg

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

This product: 12mg

Other Ingredients

Gelatin Maltodextrin Magnesium Stearate

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) Gluten Free

Product Information

📋 Directions for Use

Directions: Adults - Take two capsules daily, preferably with food, as a dietary supplement.

⚠️ Warnings & Precautions

Warning: If you are pregnant, nursing, taking any medications or planning any medical procedure, consult your physician before use.

Discontinue use and consult your physician if any adverse reactions occur. As considered by FDA, Biotin is a safe nutrient. However, before completing laboratory work, discontinue use and advise your physician, as Biotin may interfere with some laboratory tests.

Keep out of reach of children.

Tamper-evident seal: Do not use product if seal appears tampered.

🧪 Formulation Notes

May support healthy hair, skin & nails

Guaranteed no added: Sugar, sodium, yeast, soy, wheat, dairy, gluten, fish, tree nuts, peanuts, egg, fragrance, artificial colors or flavors.

Gluten free Soy free

Additional Information

Mason Guarantee Laboratory Tested cGMP Certified Good Manufacturing Practice Certified

N Mason Natural Est. 1967

Store in a dry place under controlled room temperature: 20 degrees - 25 degrees C (68 degrees - 77 degrees F).

Product Details

UPC / SKU 3 11845 14911 4

DSLD Entry Date 2020-02-26

Product Type Other Combinations

Form Capsule

Brand Mason Natural

DSLD ID 214530

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 →