Ester-C 500mg, 100 Capsules - Klaire Labs

(other) Vegetarian capsule (hydroxypropyl methylcellulose, water), stearic acid, microcrystalline cellulose, and silicon dioxide.

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

Take one capsule once or twice daily with food, or as advised by your healthcare provider. Take 2 capsules in the morning. For additional support take 2 capsules in the afternoon.

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

The Active Ingredient Is: Vitamin C (Calcium Ascorbate)

Vitamin C, also known as ascorbic acid, is a water soluble nutrient essential for normal physiological functions. In this product it is provided as a buffered calcium ascorbate complex, a gentler, non acidic form designed for broad tolerability.

This formulation combines calcium with ascorbate, delivering a buffered vitamin C complex that is compatible with vegetarian capsules and free from common allergens.

What Does Vitamin C (Calcium Ascorbate) Do?

Vitamin C participates in normal antioxidant processes and supports immune function as part of a balanced diet, in line with EFSA guidance. It also plays a role in connective tissue formation and contributes to normal energy yielding metabolism.

In this buffered form, vitamin C is provided in a manner designed for stomach comfort and compatibility with vegetarian lifestyles, aligning with product goals of quality and tolerability.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Klaire Labs, now recognised as SFI Health, brings a heritage of professional‑grade quality and industry standing that makes it a natural Welzo partner. Their reputation for rigorous formulation and emphasis on purity aligns with our commitment to trustworthy, science‑driven supplementation.

This brand’s Ester-C formulation demonstrates product‑specific capability through a buffered calcium ascorbate complex, designed to be gentler on the stomach and free from common allergens. Their approach includes non‑GMO and Vegan certification and avoidance of eight major allergens, with formulations manufactured to meet stringent purity and potency requirements. This dual emphasis on comfort and clean ingredients supports reliability in everyday use, which is essential for Welzo shoppers seeking quality guarantees and predictable results.

Our trust stems from Welzo’s vetting process and from highlighting Klaire Labs’ established manufacturing standards. This brand was evaluated by our medical team for alignment with our supplement quality standards, ensuring a fabric of safety, transparency and consistency that underpins the product fit for this supplement category.