Ester-C Plus Vitamin C is a dietary supplement that supports immune health with a gentle, gut friendly calcium ascorbate blend. Each capsule combines Ester-C calcium ascorbate with citrus bioflavonoids, acerola extract, rose hips and rutin to help support immune function. Dr. Hemilä of the University of Helsinki notes Ester-C increases vitamin C in leukocytes for up to 24 hours. Solgar has a long standing commitment to quality and uses kosher certified production.

Available Sizes & Variants:

100 capsules – daily immune support in easy to take capsules.

Benefits & Features:

• Gentle immune support with a gut friendly vitamin C blend.
• Active ingredients work together to keep higher vitamin C levels in white blood cells for 24 hours, supporting immune defence while staying easy on the gut.
• Citrus bioflavonoids, acerola, rose hips and rutin work together to boost absorption and antioxidant effect.
• Designed for daily use as part of a balanced wellness routine alongside a vitamin d supplement or probiotics for broader immune support.
• Kosher certification underlines Solgar's commitment to quality and transparent production standards.

Solgar Ester-C Plus Vitamin C embodies a long standing commitment to quality and transparency. The formula comes in vegetable cellulose capsules, free from gluten, wheat, yeast, sugar, salt and artificial colours, and carries a kosher certification from KOF-K (#K-1250). This care for sourcing and production mirrors Solgar’s heritage in premium, plant-based wellness, making it a trusted staple in many customers' daily routines.

(other) Vegetable cellulose, vegetable magnesium stearate, silica.

• GTIN: 33984010390
• Manufacturer: Solgar
• Categories: Back to School Supplements & EssentialsHealth Supplements for Frequent TravelersImmunity SupplementsNew ArrivalsSolgarVitamin 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.

Adults should take one vegetable capsule twice daily, ideally with meals or as advised by a healthcare professional. As a food supplement\, take 2-4 capsules daily\, in divided doses\, with or between meals\, or as directed by a healthcare professional.

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

The Active Ingredient Is: Vitamin C (Ascorbate)

Vitamin C, also known as ascorbate, is a water-soluble nutrient that plays a key role in normal antioxidant protection and immune function. This formulation uses Ester-C calcium ascorbate, a stomach-friendly form, paired with supporting citrus flavonoids and plant extracts to aid absorption and retention.

In this product, Ester-C calcium ascorbate provides the primary active ingredient, with additional ingredients that support its absorption and antioxidant effects. The formula is designed to be gentle on the stomach and suitable for individuals with gastric sensitivity.

What Does Vitamin C Do?

Vitamin C helps protect cells from oxidative stress and supports the production and function of immune cells, aligning with EFSA and NHS guidance. Research suggests Ester-C may maintain higher vitamin C levels in white blood cells for longer periods, supporting sustained availability.

Dr. Hemilä of University of Helsinki found that Ester-C increases vitamin C concentrations in leukocytes for up to 24 hours, reflecting its potential for prolonged activity in immune-related tissues.

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

Why Solgar Ester-C Plus Vitamin C is Welzo Selected

Solgar brings evidence-based formulation expertise to Welzo, with a long-standing reputation for quality and functional supplement design. The Ester-C Plus line uses a gentle calcium ascorbate form, enhanced by citrus bioflavonoids and plant extracts, which aligns with our commitment to purity and careful ingredient sourcing. The brand’s heritage in premium nutrition supports a trusted supplier partnership that helps ensure consistency across products.

Solgar maintains robust quality standards, including KOF-K kosher certification (#K-1250), and their manufacturing practices are grounded in recognised quality control. This combination of certification and established process supports safe, reliable products for our customers. For our team, that reliability is essential when selecting a partner for daily immune-support formulations like this one, which is specially formulated to be gentle on the stomach while delivering vitamin C in a bioavailable form.

We evaluated Solgar with our team of medical experts to validate sourcing and manufacturing rigour our team of medical experts and to understand how we verify ingredient quality how we verify ingredient quality. This brand consistently stands out for quality commitment, rigorous testing, and compatibility with Welzo’s standards, making Solgar Ester-C Plus Vitamin C a particularly well-suited fit for this supplement.