Optimum-C Formula

product on market Capsule Bluebonnet 🟢 Safety: 100/100
Brand: Bluebonnet
🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 29% of ingredients have research evidence
B Label Compliance Grade

Product Label

📄 Open Full PDF View on NIH DSLD →
📸

Have a supplement label? Find it here.

Upload a photo of any supplement label to search our database of 92,312 products.

Label Data

2 Capsule(s) Serving Size
45 Servings
Other Combinations Product Type
29% Evidence Coverage

Supplement Facts — Evidence Check

Vitamin C
1000 mg (1111% DV)
Calcium
94 mg (7% DV)
500 mg
📊 Market median: 500.0mg (283 products) 📚 173 studies (Tier A: 0, B: 62)
This product: 500mg
100 mg
📊 Market median: 100.0mg (284 products) 📚 10 studies (Tier A: 0, B: 4)
This product: 100mg
50 mg
📊 Market median: 500.0mg (19 products)
This product: 50mg
Acerola
10 mg
Rose Hips
10 mg

Other Ingredients

Kosher Vegetable Capsules Vegetable Magnesium Stearate

Label Claims — Verification

❓ Nutrient
❓ All Other
All Other (99% of products) Structure/Function (83% of products) Nutrient (54% of products)

Target Groups

Vegan Vegetarian Adult (18 - 50 Years) Kosher Gluten Free Dairy Free Sugar Free

Product Information

📋 Directions for Use

Directions: As a dietary supplement, take two capsules once daily or as directed by a healthcare practitioner.

🧪 Formulation Notes

Bluebonnet’s Optimum-C Formula Capsules contain buffered vitamin C from calcium ascorbate, rose hips and acerola. Citrus bioflavonoids from oranges, lemons, tangerines, grapefruits and limes. Plus, Leucoselect grape seed extract from Indena, hesperidin and rutin.

Free of milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat and soybeans. Also free of yeast, gluten, barley, rice, sodium and sugar.

Bluebonnet’s KOF-K Certification #K-0000700

Made with non GMO ingredients

Buffered Vitamin C, Citrus Bioflavonoids Leucoselect Grape Seed Extract

Vegan

Additional Information

Available in easy-to-swallow vegetable capsules for maximum assimilation and absorption.

0532E

Made with non GMO ingredients

Vegan

K Parve

Gluten free

Minerals are shown in their elemental value.

Product Details

UPC / SKU 7 43715 00532 7
DSLD Entry Date 2018-06-25
Product Type Other Combinations
Form Capsule
Brand Bluebonnet
DSLD ID 178084
Data Updated 2026-04-11

Research Evidence

371 Research Sources
54 Avg Quality Score
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 Cochrane
A Vitamin C supplementation for the primary prevention of cardiovascular disease
Systematic Review The Cochrane database of systematic reviews 2017
PubMed DOI Cochrane
A Vitamin C for preventing and treating the common cold
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
A Vitamin C for preventing and treating pneumonia
Meta Analysis The Cochrane database of systematic reviews 2013
PubMed DOI Cochrane
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 Cochrane
A Vitamin C supplementation for prevention and treatment of pneumonia
Systematic Review The Cochrane database of systematic reviews 2021
PubMed DOI Cochrane
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
Vitamin C Ester Ascorbyl Palmitate OL Olympian Labs 100
Vitamin C 1000 mg
Vitamin C 1000 mg PurHEALTH 100
Ultra C Buffered New Sun 100
Black Elderbarry with Liposomal Vitamin C & Zinc
Black Elderbarry with Liposomal Vitamin C & Zinc SunVita Health 100
Natural Vitamin C Herbadiet 100
View all Vitamin C products →
Vitamin C research & evidence Best Vitamin C rankings All Vitamin C products More from Bluebonnet View on NIH DSLD →