OPTIMUM-C VITAMIN C FORMULA
Scored by the Formulate Research Team · Last reviewed July 2026
Score Breakdown
Three factors carry this score; three more are checked separately and can only take points away. Hover or tap to see what drove each one.
Ingredients per Serving
| Ingredient | Amount |
|---|---|
| Vitamin C289 systematic reviews · 808 randomised trials | 1000 mg |
| Calcium702 systematic reviews · 3290 randomised trials | 94 mg |
| Citrus Bioflavonoid Complex | 500 mg |
| Grape Seed Extract | 100 mg |
| Rutin | 50 mg |
| Acerola | 10 mg |
| Rose Hips | 10 mg |
Certifications & Testing
Other Ingredients
Hypromellose, Water, Purified, Magnesium Stearate
Recommended Use
Directions: As a dietary supplement, take two capsules once daily or as directed by a healthcare practitioner.
Warnings
Caution: For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition. Keep out of reach of children.
Frequently Asked Questions
What is Bluebonnet Nutrition OPTIMUM-C VITAMIN C FORMULA's Formulate score?
Bluebonnet Nutrition OPTIMUM-C VITAMIN C FORMULA scores 70 out of 100 (grade B) on Formulate's ingredient-level rubric: clinical evidence, dose accuracy and bioavailability carry the score, while manufacturing, transparency and safety are checked separately and can only deduct.
Is Bluebonnet Nutrition OPTIMUM-C VITAMIN C FORMULA worth it?
Bluebonnet Nutrition OPTIMUM-C VITAMIN C FORMULA scores 70/100 (grade B). That's an above-average result — most of its doses and ingredient forms are well-chosen, with only minor gaps in dosing, transparency, or testing. Formulate grades every product with the same automated rubric, so the score reflects the formula — not marketing or sponsorships.
What's in Bluebonnet Nutrition OPTIMUM-C VITAMIN C FORMULA?
Each serving contains Vitamin C (1000 mg), Calcium (94 mg), Citrus Bioflavonoid Complex (500 mg), Grape Seed Extract (100 mg), and more. Serving size: 2 Capsule(s). 45 servings per container.
How do I take optimum-c vitamin c formula?
Directions: As a dietary supplement, take two capsules once daily or as directed by a healthcare practitioner.
Who makes OPTIMUM-C VITAMIN C FORMULA?
OPTIMUM-C VITAMIN C FORMULA is made by Bluebonnet Nutrition. See Formulate's full grade and product lineup for Bluebonnet Nutrition on its brand page.
Is Bluebonnet Nutrition OPTIMUM-C VITAMIN C FORMULA third-party tested?
Bluebonnet Nutrition lists the following certifications and testing for this product: Gluten-Free, Non-GMO, Vegan, Vegetarian, Dairy-Free, Sugar-Free.
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Disclosure. Formulate may earn a commission from purchases made through links on this page. Commissions never influence scores — every product is graded by the same automated rubric. This page is for educational purposes only and does not replace advice from a qualified healthcare provider.