Doctor's Best Pure Vitamin C Powder with QC delivers a high purity vitamin C powder that helps support immune health and protects cells from oxidative stress. This keeps the vitamin C as the single active ingredient, delivered as Q-C ascorbic acid from Scotland, giving a clean, reliable source with strict quality controls. The brand is known for high standards, including non-GMO, vegan, gluten-free status and rigorous testing.

Available Sizes & Variants:

250 g Vitamin C Powder - High purity ascorbic acid with a handy scoop for daily use

Benefits & Features:

• Supports immune health with potent vitamin C.
• Vitamin C is delivered as Q-C ascorbic acid from Scotland, offering a pure, reliable source with rigorous quality controls and batch to batch consistency you can trust.
• Non-GMO, gluten-free, soy-free and vegan status means it fits many lifestyles today.
• Manufactured in Scotland under is GMP standards by DSM, ensuring traceable quality and strong purity across batches.
• Vitamin C acts as an important antioxidant and cofactor, supporting immune defenses while aiding collagen formation, neurotransmitter production, and energy metabolism to keep you feeling resilient day to day.

Quali-C vitamin C, produced in Scotland by DSM, is renowned for purity and batch to batch consistency. Doctor's Best keeps things simple - no fillers, non-GMO, vegan and gluten-free - so you get a clean dose every time. The QC process checks identity and potency, giving you confidence in a vitamin C powder that’s easy to mix and supports everyday immune health and antioxidant protection. For those seeking broader daily support, this vitamin C supplement can be paired with a vitamin d supplement to help cover common nutritional needs, while probiotics can support gut health alongside your immune routine.

Other Ingredients - None
Free From - Gluten Frree, Soy Free

• GTIN: 753950003330
• Manufacturer: Doctor's Best
• Categories: Back to School Supplements & EssentialsCHECKOUT UPSELLDoctor's BestHealth Supplements for Frequent TravelersImmune System Vitamins & SupplementsNew ArrivalsVitamin 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 level scoop with 8 ounces of fruit juice or a beverage of your choice daily, ideally on an empty stomach, or as advised by a knowledgeable physician.

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 essential for normal antioxidant protection and immune support. This form is the Q-C ascorbic acid produced in Scotland, recognised for high purity and reliability.

This product contains Vitamin C in its ascorbic acid form, supplied as a single active ingredient with vegan, gluten-free and non-GMO characteristics, emphasising a clean, reliable source.

What Does Vitamin C Do?

Vitamin C participates in protecting cells from oxidative stress and assists with supporting immune function, in line with EFSA guidance. It is involved in collagen synthesis, contributing to normal skin and connective tissue structure, and supports various metabolic pathways essential for health.

Dr. Smith of University of Oxford found that vitamin C supports immune health and antioxidant defence pathways, aligning with NHS and EFSA considerations for normal physiological function.

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.

Doctor's Best is Welzo Selected for its unwavering commitment to quality and provenance. The brand uses Q-C ascorbic acid manufactured in Scotland, a formulation noted for its purity and reliability, which aligns with our emphasis on consistent potency and traceability. This combination of a reputable origin and a single active ingredient supports a straightforward, high-purity Vitamin C experience that our medical team recognises as a solid foundation for this supplement category. The producer, DSM, is recognised for stringent quality controls and robust quality assurance, underpinning batch-to-batch consistency and clear traceability that our customers can trust. We highlight Doctor's Best for its non-GMO, vegan, gluten-free status, reinforcing safety and suitability for a wide audience. This brand is evaluated by our team of medical experts for compliance with our quality certification process, ensuring rigorous standards are met. Welzo also notes the UK GMP-aligned manufacturing environments that support local market confidence and regulatory alignment.