Source Naturals Wellness Formula Advanced Immune Aid

Other Ingredients - microcrystalline cellulose, dibasic calcium phosphate, hydroxypropyl cellulose, modified cellulose gum, stearic acid, magnesium stearate, and silica.

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.

Consume three tablets daily to support wellness. For additional immune support, take three tablets every three hours. Do not take more than 15 tablets in one day for up to seven days in a row.

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

The Active Ingredient Is: Vitamin C (Ascorbic Acid)

Vitamin C, also known as ascorbic acid, is a water-soluble nutrient that supports normal immune and antioxidant functions. It contributes to the body’s defence against oxidative stress and helps maintain healthy connective tissue and immune cell performance.

This form is typically supplied as ascorbic acid in supplements and can be derived from either natural or synthetic sources, commonly used to ensure consistent bioavailability.

What Does Vitamin C Do?

Vitamin C helps maintain normal immune function and participates in antioxidant defence to protect cells from oxidative stress, aligned with EFSA guidance. Dr. Hemilä of University of Helsinki found that vitamin C supports immune responses during challenging periods.

EFSA-style understanding emphasises its role in sustaining normal physiological processes during periods of increased immune activity.

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

Dietary supplements are not a replacement for a balanced diet. Do not take more than the recommended amount. Keep in a cool, dry area away from light and heat. Ensure they are out of children's reach and view.

Source Naturals takes a science-backed approach to immune support, making them a natural partner for Welzo as we curate products that emphasise purity, potency and practicality. This brand is recognised as a well-established name in the U.S. supplement space, celebrated for innovation in immune health and for delivering formulations built on solid science and robust manufacturing standards. Their track record includes multiple industry accolades, underscoring a long-standing reputation for reliability within the natural products sector, which helps us stand behind every supplement we list.

Source Naturals emphasises transparency in sourcing, uses non-GMO ingredients and vegetarian binders, and maintains GMP-certified manufacturing. This commitment to quality aligns with our expectations for rigorous testing, clean labelling and ingredient purity, which you can explore further with how we verify ingredient quality. The Wellness Formula blend combines essential nutrients with immune-supporting herbs in a way that mirrors how our medical team assesses product suitability, which you can learn about from Welzo's healthcare professionals.

Our choice reflects Source Naturals’ heritage in developing comprehensive formulas and their dedicated approach to quality, making them particularly well suited for an immune-support supplement like Wellness Formula Advanced Immune Support. This careful brand evaluation, guided by our expert team, translates into confidence for you as a Welzo customer.