Swanson Buffered Vitamin C with Bioflavonoids is a daily supplement that supports immune function and antioxidant protection, thanks to calcium buffered vitamin C paired with citrus bioflavonoids. Swanson has a long history in the supplement world, and this formula brings practical gut gentleness together with antioxidant synergy. Easy on the stomach thanks to buffering and calcium, it slots nicely into everyday routines. Gentle on the gut.

Available Sizes & Variants:

100 capsules – convenient daily dose in a compact bottle.

Benefits & Features:

• Buffered vitamin C supports immune function and antioxidant protection.
• Bioflavonoids help stabilise vitamin C and support absorption.
• Buffered calcium in each capsule reduces stomach upset.
• Some versions are independently lab verified for quality.
• Longer description about how this product blends vitamin C with bioflavonoids to support immune health and antioxidant protection, while the buffering with calcium helps protect the stomach during daily use.

Swanson's Buffered Vitamin C with Bioflavonoids carries a heritage of practical, reliable supplements and complements a vitamin d supplement in winter wellness. The formula pairs 500 mg of calcium buffered vitamin C with 200 mg of citrus bioflavonoids and about 60 mg of calcium per capsule, a setup known to be gentle on the stomach. Some versions are independently lab verified, giving you extra confidence in quality. This blend helps protect cells from free radicals and supports immune function, complementing vitamins c intake in a varied diet.

Gelatin, Rice Flour, may contain one or both of the following; Magnesium Stearate, Silica

• GTIN: 87614019444
• Manufacturer: Swanson
• Categories: Back to School Supplements & EssentialsHealth Supplements for Frequent TravelersImmunity SupplementsSwansonVitamin CVitamin C Skincare
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one capsule of Swanson Buffered Vitamin C with Bioflavonoids daily, preferably with food to enhance absorption. Store in a cool, dry place away from direct sunlight. Keep out of reach of children. Consult your healthcare provider before use if you are pregnant, nursing, taking medication, or have a medical condition.

Please consult the product packaging for accurate instructions on how to use the product.

The Primary Ingredient Is: Vitamin C (Calcium Buffered)

Vitamin C, a water-soluble nutrient, features in normal metabolic functions and acts as an antioxidant. This calcium buffered form uses calcium L-ascorbate to help reduce stomach upset linked to traditional ascorbate supplements.

The formulation teams up vitamin C with bioflavonoids, and calcium contributes to a gentler profile for everyday use.

What Does Vitamin C (Calcium Buffered) Do?

Vitamin C engages in antioxidant activity and supports immune function, while bioflavonoids help stabilise vitamin C and may support its absorption, aligning with recognised nutrient functions in EFSA guidance.

Overall, this combo supports normal immune and antioxidant roles without implying disease-related outcomes.

This product isn't meant to diagnose, treat, cure, or prevent any disease.

Vitamin C Calcium Ascorbate: 500 mg, Calciumfrom Calcium Ascorbate: 60 mg, Citrus Bioflavonoid Complex: 200 mg

Swanson is our trusted choice for this supplement thanks to a long-standing commitment to production excellence and consistent quality across its range. The brand upholds rigorous quality standards and, where available, independent lab verification demonstrates their emphasis on testing and consistency in the formulation. This focus on reliability aligns with our quality certification process, ensuring what you see is what you get.

In the UK market, Swanson’s reputation for dependable sourcing and clear, consumer-friendly formulations fits well with Welzo’s approach to transparent curation. Our doctors, nurses, and nutritionists evaluate the brand’s credentials and manufacturing philosophy as part of our team-driven vetting process, which you can explore through our expert team of doctors, nurses, and nutritionists.

This partnership combines Swanson’s established manufacturing ethos with a product designed to be gentle on the stomach through buffered vitamin C, aligning brand strengths with the supplement’s needs and our standards for safety and quality.