What’s inside this formula?
Thorne’s Vitamin C with Flavonoids is listed here in the vitamin c collection. This article looks at the selected 90 capsules — US label pack, then puts its ingredients into context.
Per 1 capsule: Citrus Bioflavonoids 75 mg; Vitamin C (as Ascorbic Acid) 500 mg.
Check the original label ↗Vitamin C supports normal collagen formation and helps the body absorb iron from plant foods. It also participates in antioxidant defences. A supplement can supply vitamin C when intake is inadequate, but a stronger tablet does not automatically provide better health than meeting the requirement through a varied diet.
The pack details above come from the manufacturer. Ingredient research below does not establish the effects of this exact product or independently verify its contents.
The complete declared ingredient amounts
The current table uses a serving of 1 capsule. It declares Citrus Bioflavonoids 75 mg; Vitamin C (as Ascorbic Acid) 500 mg. These are manufacturer label amounts, not a personal dosing instruction.
The comparison detail that changes the decision
This formula combines vitamin C with citrus bioflavonoids. The bioflavonoid weight should not be added to the vitamin C dose. The selected product has 90 labelled servings per container. Matching ingredient form and serving matters more than bottle count.
Excipients, cautions and evidence limits
Other listed ingredients: Cellulose Powder, Calcium Laurate, Hypromellose (derived from cellulose) capsule. Large vitamin C doses may cause diarrhoea. Review kidney disease, stone history, iron overload and overlapping supplements before use. No independent batch test or exact-formula clinical outcome was verified in this review. Current Indian stock and delivered price remain unverified.
Where might it be useful?
Normal tissue function
Adequate vitamin C supports the formation of collagen needed for normal connective tissues and wound healing.
Plant-iron absorption
Vitamin C can help the body absorb non-haem iron when consumed with food.
What the research can — and cannot — tell us
These are established nutrient roles, not evidence that this exact bottle prevents illness. Routine vitamin C does not prevent colds in most people; any reduction in their duration is modest. NIH has not established one supplemental form as better than all others.
What deserves your attention?
Large vitamin C doses may cause diarrhoea. Review kidney disease, stone history, iron overload and overlapping supplements before use.
Suitability comes before strength
Large amounts can cause diarrhoea and stomach cramps. Discuss supplementation if you have iron overload or receive cancer treatment, and check overlapping products before combining them.
Dietary details for this product
Dietary status not confirmed The reviewed current label does not explicitly establish vegan or vegetarian status for the complete formula. A cellulose capsule or dairy-free statement alone is not a whole-formula declaration.
A dietary label and an allergy assessment answer different questions. Check every ingredient, the capsule or softgel materials and the allergen statement on the pack you receive. If you take medicines, have a health condition, are pregnant or are choosing for a child, discuss the full formula with a qualified clinician.
Make the comparison meaningful.
- Match the exact version.Look for Thorne · Vitamin C with Flavonoids and the 90 capsules — US label pack. A similar name or bottle can contain a different strength, blend or serving.
- Compare like with like.Read the serving size alongside the active ingredient amount. Capsule count, compound weight and total blend weight can describe different things. Use the label notes above to see what matters for this formula.
- Check the seller and final cost.Review seller identity, expiry, batch details and any Indian import information. Compare the final delivered price only after matching the formula. Prices and stock are checked on the retailer’s site.
Keep the label beside the decision.
Open the complete product profile for its source, dietary notes and available shopping destination.
Is this an endorsement or a medical recommendation?
No. This is an editorial guide to a selected product and its ingredient context. We have not independently tested this bottle or established a clinical benefit for this exact formula. A product’s inclusion is not a recommendation that everyone should take it.
Does Proof & Price earn from shopping links?
Some product-profile links are paid links and are labelled. As an Amazon Associate we earn from qualifying purchases. Manufacturer source links are provided for checking the label. Read our affiliate disclosure.
Read, check, decide.
Product label reviewed 2026-11-01. Ingredient context reviewed 2026-10-26. This article has not received independent clinical review. Packaging and formulas can change; the current pack takes precedence.
↗
↗
↗