Home/ Supplements/ Vitamin C/ Gluco-Science

Gluco-Science

product on market Tablet or Pill Source Naturals Safety: 100/100
100/100

This product looks safe

  • Niacinamide: 67mg is 1.9× the Tolerable Upper Intake Level (35mg)
  • 58% of ingredients have research evidence
C Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

This formula contains vitamins C, D3, and E, alongside magnesium, which are researched for their roles in immune function and metabolic support. There is strong evidence for the general physiological roles of these micronutrients. However, the overall evidence coverage for this specific ingredient combination is limited.

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

Alerts

Safety Alerts

Niacinamide: 67mg is 1.9× the Tolerable Upper Intake Level (35mg)

Label

Product Label

Label for Gluco-Science
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
45
Servings
Other Combinations
Product Type
58%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Calories
5 Calorie(s)
Vitamin C
250 mg (417% DV)
334 IU (84% DV)
Within RDA (0.6× RDA) 608 studies (A:16, B:251)
66 IU (220% DV)
2.9× RDA — within safe limits 179 studies (A:3, B:90)
50 mg (13% DV)
Within RDA (0.1× RDA) 316 studies (A:8, B:159)
3 mg (20% DV)
Within RDA (0.3× RDA) 263 studies (A:6, B:134)
8 mg (533% DV)
6.7× RDA — above typical dose 76 studies (A:0, B:33)
8 mg (470% DV)
6.2× RDA — above typical dose 13 studies (A:0, B:1)
67 mg (335% DV)
Exceeds UL by 1.9× (UL: 35 mg) 196 studies (A:5, B:63)
33 mg (1650% DV)
25.4× RDA — above typical dose (UL: 100 mg) 114 studies (A:3, B:35)
200 mcg (50% DV)
Within RDA (0.5× RDA) 226 studies (A:10, B:105)
500 mcg (8333% DV)
208.3× RDA — above typical dose 139 studies (A:1, B:44)
1.6 mg (533% DV)
53.3× RDA — above typical dose 27 studies (A:0, B:11)
16 mg (160% DV)
3.2× RDA — above typical dose 2 studies — no high-quality reviews
33 mcg (47% DV)
Within RDA (0.6× RDA) 173 studies (A:0, B:67)
1 mg (50% DV)
Within RDA (0.4× RDA) 9 studies — no high-quality reviews
133 mcg (108% DV)
3.8× RDA — above typical dose 199 studies (A:1, B:55)
16.7× RDA — above typical dose (UL: 1000 mg) 179 studies (A:3, B:90)
Market median: 200.0mg (198 products) 6 studies — no high-quality reviews
Market median: 600.0mg (7 products) 39 studies (A:2, B:13)
Bitter Melon Fruit Extract
150 mg
100 mg
Market median: 500.0mg (180 products) 5 studies (A:0, B:1)
Cassia bark extract
100 mg
Market median: 500.0mg (193 products) 7 studies — no high-quality reviews
Gymnema leaf extract
71 mg
68 mg
Market median: 420.0mg (227 products)
66 mg
Market median: 333.0mg (166 products) 9 studies (A:0, B:2)
Market median: 450.0mg (390 products) 160 studies (A:0, B:63)
Market median: 500.0mg (138 products) 2 studies — no high-quality reviews
Prickly Pear
66 mg
50 mg
Market median: 500.0mg (497 products) 135 studies (A:0, B:40)
Maitake Mushroom
50 mg
Ivy Gourd aerial parts extract
50 mg
Market median: 100.0mg (120 products)
Market median: 100.0mg (284 products) 10 studies (A:0, B:4)
Blueberry Leaf Extract
33 mg
33 mg
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Myricetin
16 mg
Eleuthero root extract
20 mg
17 mg
Market median: 550.0mg (217 products) 29 studies (A:0, B:5)
1.1× RDA — within safe limits 179 studies (A:3, B:90)
Market median: 100.0mg (283 products) 144 studies (A:1, B:64)
33 mcg
Market median: 0.5mg (6 products) 1 studies (A:0, B:1)

Other Ingredients

silicified Microcrystalline Cellulose Stearic Acid Silica modified Cellulose Gum
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: 1 to 2 tablets, three times daily before meals.

Warnings & Precautions

Contains soy.

Warning: Do not use if you are taking any form of prescription nitrate such as nitroglycerin. If you have any disorder of blood sugar metabolism (such as diabetes, or hypoglycemia), or if you are taking insulin, any lipid-lowering, anticoagulant, or anti-platelet drug, or if you are pregnant, may become pregnant, or breastfeeding, consult your physician before using this product.

Do not use if either tamper-evident seal is broken or missing.

Keep out of the reach of children.

Formulation Notes

Contains soy.

Additional Information

Helps maintain healthy blood sugar levels when used as part of your diet

Alpha-lipoic acid, chromium and other ingredients support the mediation of insulin release and activity.

Note: Best results with this product may be obtained with long term use.

SN1445 REV K152-H (49)

Metadata

Product Details

UPC / SKU0 21078 01445 4
DSLD Entry Date2017-06-23
Product TypeOther Combinations
FormTablet or Pill
BrandSource Naturals
DSLD ID75508
Data Updated2026-04-11
Research

Research Evidence

371
Research Sources
54
Avg Quality
148
Meta Analysis
82
Systematic Review
71
Rct
62
Clinical Trial
2
Regulatory Source
1
Cochrane Review
1
Narrative Review
1
Other
1
Openfda Safety
A Vitamin C supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017 PubMed DOI
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013 PubMed DOI
A Vitamin E supplementation in pregnancy
Meta Analysis The Cochrane database of systematic reviews 2015 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Meta Analysis The Cochrane database of systematic reviews 2020 PubMed DOI
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021 PubMed DOI
A Nutritional interventions for preventing and treating pressure ulcers
Meta Analysis The Cochrane database of systematic reviews 2024 PubMed DOI
A Does Vitamin C Supplementation Provide a Protective Effect in Periodontal Health? A Systematic Review and Meta-Analysis
Meta Analysis International journal of molecular sciences 2024 PubMed DOI
A Circulating vitamin C concentration and risk of cancers: a Mendelian randomization study
Meta Analysis BMC medicine 2021 PubMed DOI
View all evidence for Vitamin C →
Compare

Similar Products

OB Complete Chewable
Vertical Pharmaceuticals · Tablet or Pill
100
RenaPlex-D
Nephro-Tech · Tablet or Pill
100
800/Ultra D
Dialyvite · Tablet or Pill
100
B-Vital
Higher Nature · Tablet or Pill
100
Energise
Higher Nature · Tablet or Pill
100
View all Vitamin C products →
Vitamin C research Best Vitamin C All Vitamin C products More from Source Naturals View on NIH DSLD →

This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.