--- product_id: 249093990 title: "Vitamin C Powder with Quali-C, Healthy Immune System, Brain, Eyes, Heart and Circulation, Joints, Sourced from Scotland, 250G, 8.8 Ounce (Pack of 1)" brand: "doctor's best" price: "S$47" currency: SGD in_stock: true reviews_count: 10 url: https://www.desertcart.sg/products/249093990-vitamin-c-powder-with-quali-c-healthy-immune-system-brain store_origin: SG region: Singapore --- # Gluten-Free, Non-GMO, Vegan Quali-C sourced from Scotland 1000mg pure Vitamin C per serving Vitamin C Powder with Quali-C, Healthy Immune System, Brain, Eyes, Heart and Circulation, Joints, Sourced from Scotland, 250G, 8.8 Ounce (Pack of 1) **Brand:** doctor's best **Price:** S$47 **Availability:** ✅ In Stock ## Summary > 🛡️ Elevate your immunity with Scotland’s purest Vitamin C power! ## Quick Answers - **What is this?** Vitamin C Powder with Quali-C, Healthy Immune System, Brain, Eyes, Heart and Circulation, Joints, Sourced from Scotland, 250G, 8.8 Ounce (Pack of 1) by doctor's best - **How much does it cost?** S$47 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/249093990-vitamin-c-powder-with-quali-c-healthy-immune-system-brain) ## Best For - doctor's best enthusiasts ## Why This Product - Trusted doctor's best brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Clean & Pure Formula:** Free from gluten, soy, artificial colors, and sweeteners—because your health deserves the best. - • **Potent 1000mg Dosage:** Fuel your immune system and antioxidant defenses with a clinically effective daily dose. - • **Antioxidant Powerhouse:** Boost your body's natural defense by regenerating key antioxidants like Vitamin E and glutathione. - • **Premium Scottish Quali-C:** Experience the highest quality Vitamin C sourced directly from Scotland’s trusted labs. - • **Comprehensive Wellness Support:** Supports brain, eyes, heart, joints, and circulation for total-body vitality. ## Overview Doctor's Best Vitamin C Powder delivers 1000mg of high-quality Quali-C sourced from Scotland, designed to support immune health, antioxidant protection, and overall wellness. This vegan, gluten-free, and non-GMO formula enhances brain, eye, heart, joint, and circulatory function while boosting your body's natural antioxidant network. ## Description Vitamin c is a key compound in the body's "antioxidant network," a chain of synergistic, inextricability linked, well-studied antioxidants that includes glutathione (GSH) and vitamin e. When vitamin e uses its antioxidant function in neutralizing free radicals, it also loses this antioxidant function. Vitamin c can change this status; it can regenerate vitamin e back to its native form, and is thought to "spare" glutathione in the body as well. Importantly, when ascorbate donates an electron and becomes itself oxidized, or "consumed," the ascorbate radical is relatively harmless. In a double-blind, placebo-controlled study in which blood GSH was measured in healthy subjects at several stages, 500 mg of vitamin c taken daily for 2 weeks significantly raised erythrocyte (red blood cell) glutathione levels. The researchers concluded that vitamin c supplementation at that level can benefit the overall antioxidant capacity of the blood. Review: يتحقق - جيد Review: No Colors or Artificial Sweeteners - This pure vitamin C without colors or artificial tastes or sweeteners. Most probably this is the best way to take Vitamin C ## Features - VITAMIN C WITH Q-C - Doctor’s Best Vitamin C contains Q-C, which is manufactured in Scotland and prized for its high quality and reliability. Vitamin C is known for immune health support and antioxidant support.* - IMMUNE SUPPORT- Vitamin C is essential for the synthesis of collagen, carnitine, and certain brain chemical transmitters, provides fundamental support for the brain, eyes, skin, heart, circulation, and immune system.* - POWERFUL ANTIOXIDANT - Ascorbic acid is vital to the body for its role as an electron donor, supporting metabolic enzymes, enhances the body's antioxidant potential, also protects against free radical damage, which can lead to oxidative stress.* - TRUSTED AND PURE - 1000mg of Vitamin C with Q-C each serving. Gluten Free, Non-GMO, Soy Free, Vegan. Doctor's Best is committed to the safety of all of our products, offering a clean and reliable supplement for your well-being. - IMPORTANT NOTE: Exposure to heat or sunlight may lead to melting/damage of product. Hence customers are expected to be available during the product delivery. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00HNS1E0W | | Age Range Description | Adult | | Allergen Information | Gluten Free, Soy Free | | Best Sellers Rank | #23,953 in Health ( See Top 100 in Health ) #161 in Vitamin C Supplements | | Brand | Doctor's Best | | Brand Name | Doctor's Best | | Color | red | | Customer Reviews | 4.6 out of 5 stars 2,222 Reviews | | Diet Type | Gluten Free | | Diet type | Gluten Free | | Dosage Form | Powder | | Flavor | Unflavored | | Flavour | Unflavored | | Global Trade Identification Number | 00753950003330 | | Item Dimensions | 8.1 x 8.1 x 11.4 centimeters | | Item Form | Powder | | Item Weight | 8.8 Ounces | | Item form | Powder | | Manufacturer | Doctor's Best | | Manufacturer Part Number | DRB-00333 | | Model Name | r's Best Vitamin C Powder with Quali-C, Healthy Immune System, Brain, Eyes, Heart and Circulation, Joints, Sourced from Scotland, 250G, 8.8 Ounce (Pack of 1) | | Model Number | DRB-00333 | | Number of Items | 1 | | Primary Supplement Type | Vitamin C | | Primary supplement type | Vitamin C | | Product Benefits | Immune Support | | Product benefits | Immune Support | | Special Ingredients | Non-GMO, Gluten Free, Soy Free, Vegan | | Specific Uses For Product | Immune Support | | UPC | 753950003330 | | Unit Count | 250 Grams | ## Product Details - **Brand:** Doctor's Best - **Diet type:** Gluten Free - **Flavour:** Unflavored - **Item form:** Powder - **Primary supplement type:** Vitamin C ## Images ![Vitamin C Powder with Quali-C, Healthy Immune System, Brain, Eyes, Heart and Circulation, Joints, Sourced from Scotland, 250G, 8.8 Ounce (Pack of 1) - Image 1](https://m.media-amazon.com/images/I/61bCXhZ3uTL.jpg) ## Questions & Answers **Q: Is this product 100% corn free?** A: No, it is not corn-free. It says on the Quali-C website that Quali-C is sourced from non-gmo cornfields. http://www.dsm.com/products/quali-c/en_US/about-quali-c/traceability.html **Q: Some people are saying this isn't real vitamin c, what is quali-c? why doesnt it dissolve in water?** A: The Vitamin C recommended by the Vitamin C Foundation is a Quali-C product, and a quick search of "ascorbic acid" shows it to be synonymous with Vitamin C, so the argument that Quali-C is not real Vitamin C seems untenable. As for its solubility in water, it dissolves almost instantly in hot water. **Q: Doctor's best is owned by a multi-national, food conglomerate company. how can i trust that this product is truly quali-c from scotland?** A: The label indicates it was manufactured in Scotland. Unless they are giving false information on the label, I will have to assume that it is true. I have been unable to find another vitamin c powder that is certified non-GMO that is not made in China from corn, it seems to work fine for me, no colds or flus or infections for over 2 years since I have been taking it. I suggest you contact Doctors Best directly with any questions, if you can trust what they tell you. Hope this is of help. The main thing is to avoid vitamins from China. **Q: Is this L-ascorbic acid?** A: We are happy to help. The Doctor's Best Vitamin C Powder is ascorbic acid using the branded Quali™-C. ## Customer Reviews ### ⭐⭐⭐⭐⭐ يتحقق *by M***D on 11 January 2026* جيد ### ⭐⭐⭐⭐⭐ No Colors or Artificial Sweeteners *by P***E on 24 May 2025* This pure vitamin C without colors or artificial tastes or sweeteners. Most probably this is the best way to take Vitamin C ### ⭐⭐⭐⭐⭐ Product *by M***Z on 6 June 2023* The product is very good ## Frequently Bought Together - Doctor's Best Vitamin C Powder with Q-C, Healthy Immune System, Brain, Eyes, Heart and Circulation, Joints, Sourced from Scotland, 250G, 8.8 Ounce - Doctor's Best Vitamin C with Q-C - Vitamin C 1000mg Non-GMO, Vegan, Gluten Free, Soy Free, Sourced from Scotland Veggie Caps, 120 Count - Doctor's Best High Absorption CoQ10 with BioPerine, Gluten Free, Naturally Fermented, Heart Health, Energy Production, 100 mg, 120 Count --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/249093990-vitamin-c-powder-with-quali-c-healthy-immune-system-brain](https://www.desertcart.sg/products/249093990-vitamin-c-powder-with-quali-c-healthy-immune-system-brain) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-08-23*