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Ultimate Ascorbate C 1,000 mg

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

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 38% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Vitamin C and D3 are supported by strong evidence for immune function and bone health, while calcium is essential for skeletal maintenance. Research indicates these nutrients play critical roles in cellular protection and mineral homeostasis. The ingredient profile is generally recognized as safe for most adults.

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

Label

Product Label

Label for Ultimate Ascorbate C 1,000 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Tablet(s)
Serving Size
50
Servings
Other Combinations
Product Type
38%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

Calories
15 Calorie(s)
Total Carbohydrates
3 Gram(s) (1% DV)
Vitamin C
2000 mg (2222% DV)
2 mcg (11% DV)
Within RDA (0.1× RDA) 608 studies (A:16, B:251)
Calcium
145 mg (11% DV)
98 mg (23% DV)
Within RDA (0.2× RDA) 316 studies (A:8, B:159)
23 mg (209% DV)
2.1× RDA — within safe limits 263 studies (A:6, B:134)
500 mcg (56% DV)
Within RDA (0.6× RDA) 37 studies (A:0, B:11)
5 mg (217% DV)
2.2× RDA — within safe limits 9 studies — no high-quality reviews
Potassium
99 mg (2% DV)
Market median: 500.0mg (283 products) 174 studies (A:0, B:62)
Hesperidin
30 mg
30 mg
Market median: 500.0mg (19 products)

Other Ingredients

Stearic Acid Microcrystalline Cellulose Hydroxypropylcellulose modified Cellulose Gum
Claims

Label Claims — Verification

Unverified Nutrient
Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Suggested Use: 2 tablets 1 to 2 times daily; for short term, high potency use, do not exceed 8 tablets daily.

Warnings & Precautions

Note: If you are pregnant, may become pregnant, or breastfeeding, consult your health care professional 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

Supports immune system

Each tablet contains 1,000 mg of vitamin C as a blend of five mineral ascorbates and ascorbates and ascorbic acid complexes. Vitamin C is an essential nutrient that functions as both a co-factor and antioxidant throughout the body. Vitamin C plays a vital role in collagen formation, amino acid metabolism, hormone synthesis, and the body’s immune system.

Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, preservatives, or artificial color, flavor or fragrance.

Metadata

Product Details

UPC / SKU0 21078 00832 3
DSLD Entry Date2022-09-22
Product TypeOther Combinations
FormTablet or Pill
BrandSource Naturals
DSLD ID272974
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 →
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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.