Optimal Vitamin C Plus is a vitamin C supplement that boosts immune defence and antioxidant protection, giving you gentle daily support you can feel. Key actives include buffered vitamin C and bioflavonoids that support absorption and cellular protection. Seeking Health is known for professional grade supplements and strict cGMP quality standards.

Available Sizes & Variants:

164g jar – high-potency, buffered vitamin C powder designed for gentle daily use.

Benefits & Features:

• Buffer formula minimises stomach upset, making daily vitamin C a breeze.
• High potency vitamin c supplement per serving supports immune function and antioxidant supplement benefits.
• Bioflavonoids like quercetin, luteolin, and rutin boost absorption and enhance antioxidant activity.
• Effervescent, monk fruit sweetened, and suitable for vegetarians.
• Formulated to be gentle on the stomach with calcium and magnesium buffers, the product supports daily use without irritation while delivering comprehensive immune and connective tissue support.

Seeking Health's Optimal Vitamin C Plus blends a high potency buffered vitamin C powder with bioflavonoids for a reliable antioxidant supplement daily use. Each serving delivers 2,600 mg of vitamin C and includes quercetin, luteolin and rutin to support absorption and antioxidant activity, while monk fruit keeps it tasty. Dr Anitra Carr of the University of Otago notes that vitamin C supports immune function.

(other) Malic acid, monkfruit extract, natural lemon flavour.

• GTIN: 810007521299
• Manufacturer: Seeking Health
• Categories: Back to School Supplements & EssentialsHealth Supplements for Frequent TravelersImmunity SupplementsNew ArrivalsOut of stockPopular Supplement BrandsSeeking HealthVitamin 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.

Mix one scoop daily into filtered water or your preferred beverage, or use as directed by your healthcare professional. Take one capsule daily with or without food\, or as recommended by a healthcare practitioner.

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

The Active Ingredient Is: Vitamin C (Ascorbic Acid)

Vitamin C is a water-soluble vitamin that acts as an antioxidant and is essential for healthy collagen formation and tissue upkeep.

This formulation uses ascorbic acid with buffered calcium and magnesium ascorbate to support tummy tolerability, and it includes bioflavonoids to boost antioxidant activity and overall nutrient function.

What Does Vitamin C Do?

Vitamin C supports antioxidant protection and collagen synthesis, helping normal skin and connective tissue function and backing normal immune system operation in line with EFSA guidance.

Bioflavonoids included in the formula can aid absorption and provide extra antioxidant effects, helping to safeguard cells from oxidative stress we all face in daily life.

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

Seeking Health is our chosen partner for Optimal Vitamin C Plus because the brand adopts a practical, science-driven approach to supplement manufacturing, emphasising thorough quality from ingredient choice to final product. The manufacturer commits to cGMP standards, ensuring consistency of identity, purity, potency and composition across batches, which sits at the heart of our trust in this brand.

Seeking Health stands out with clear ingredient transparency and a focus on formulation integrity, highlighting buffered vitamin C and complementary bioflavonoids crafted for broad antioxidant support while minimising gastrointestinal irritation. This commitment to quality is reinforced by in-house quality controls and full ingredient disclosure, aligning with our emphasis on safety, traceability and reassurance for customers. Compared with peers, Seeking Health’s emphasis on professional-grade standards and transparent quality practices gives us a competitive edge in reliability and reproducibility.

Our team reviewed this brand using Welzo’s rigorous vetting process and picked it for Optimal Vitamin C Plus because its scientific formulation, robust manufacturing standards, and transparent quality practices align with our product fit and patient safety priorities. Learn more about how we approach this from our team of medical experts and our supplement quality standards.