Ultimate C 500 by Highland Laboratories

100/100

This product looks safe

No ingredients exceed tolerable upper intake levels
20% of ingredients have research evidence

B Label Compliance Grade

What the Evidence Says

✨ AI-generated · Qwen 3.6 · methodology

Vitamin C and citrus bioflavonoids, including hesperidin and rutin, are supported by strong evidence for antioxidant activity and immune support. Calcium is well-established for maintaining bone health. However, the overall evidence coverage for this specific ingredient combination is limited.

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

Label

Product Label

Open Full PDF View on NIH DSLD →

Details

Label Data

1 Vegetarian Capsule(s)

Serving Size

Other Combinations

Product Type

20%

Evidence Coverage

Ingredients

Supplement Facts — Evidence Check

Vitamin C

500 mg (833% DV)

Calcium

57 mg (5% DV)

Citrus Bioflavonoid Complex

100 mg

Market median: 500.0mg (283 products) 174 studies (A:0, B:62)

Hesperidin

50 mg

Rutin

50 mg

Market median: 500.0mg (19 products)

Other Ingredients

Vegetable Cellulose organic Rice extract Cellulose organic Rice concentrate

Claims

Label Claims — Verification

Unverified All Other

Info

Product Information

Directions for Use

One or more capsule daily, as a dietary supplement.

Formulation Notes

Esterified-acid free Ultimate C 500 Bioflavonoids & Rutin

No soy, salt, yeast, gluten, milk & egg products, sugar, starch or preservatives.

Our acid free poly ascorbate is specially bound with esterified niacin and vegetable surfactant from maximum uptake and assimilation.

Additional Information

Also available in 180 count

GMP Quality Assured Earth Friendly

% Daily Value

PR 313

Metadata

Product Details

UPC / SKU7 68305 31312 5

DSLD Entry Date2017-10-21

Product TypeOther Combinations

FormCapsule

BrandHighland Laboratories

DSLD ID79500

Data Updated2026-04-11

Research

Research Evidence

371

Research Sources

Avg Quality

148

Meta Analysis

Systematic Review

Rct

Clinical Trial

Regulatory Source

Cochrane Review

Narrative Review

Other

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

Vitamin C Ester Ascorbyl Palmitate

OL Olympian Labs · Capsule

Black Elderbarry with Liposomal Vitamin C & Zinc

SunVita Health · Capsule

View all Vitamin C products →

Vitamin C research Best Vitamin C All Vitamin C products More from Highland Laboratories 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.