--- product_id: 4783723 title: "Doctors Best Vitamin C with Quali-C 1000mg 120 VegCap" brand: "doctor's best" price: "$47.53" currency: USD in_stock: true category: "Doctor's Best" url: https://www.desertcart.us/products/4783723-doctors-best-vitamin-c-with-quali-c-1000mg-120-vegcap store_origin: US region: United States of America --- # 120 vegan, non-GMO veggie capsules 1000mg pure Vitamin C per capsule Powerful antioxidant immune support Doctors Best Vitamin C with Quali-C 1000mg 120 VegCap **Brand:** doctor's best **Price:** $47.53 **Availability:** ✅ In Stock ## Summary > 🛡️ Elevate your immunity with science-backed Vitamin C power! ## Quick Answers - **What is this?** Doctors Best Vitamin C with Quali-C 1000mg 120 VegCap by doctor's best - **How much does it cost?** $47.53 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/4783723-doctors-best-vitamin-c-with-quali-c-1000mg-120-vegcap) ## 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 - • **Potent 1000mg Dosage:** Maximize your daily antioxidant defense with a clinically proven high dose. - • **Clean & Vegan Formula:** Non-GMO, gluten-free, soy-free capsules crafted for mindful wellness. - • **Brain & Body Protection:** Helps neutralize oxidative stress, safeguarding neurons and overall vitality. - • **Immune System Powerhouse:** Supports your body’s natural defenses and cellular health with every capsule. - • **Scientifically Backed Quality:** Made in Scotland with Q-C ascorbic acid, trusted for over 35 years. ## Overview Doctor's Best Vitamin C 1000mg capsules deliver a potent, vegan-friendly dose of Q-C ascorbic acid, manufactured in Scotland for premium quality. Designed to support immune health and antioxidant protection, this non-GMO, gluten- and soy-free formula helps maintain cellular vitality and brain health with 120 capsules per bottle, trusted by professionals for over 35 years. ## 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. In another study of similar design, 1000 mg of vitamin C taken daily for 4 weeks bolstered vitamin E and glutathione content in erythrocyte cell membranes, compared with placebo. The highest concentrations of vitamin C in the body are found in the central nervous system (in neurons of the brain & spinal cord) and the adrenal glands. Although the presence of ascorbate in neurons is in part explained by its neuromodulatory enzyme activity, its high concentration suggests that vitamin C is so greatly retained by neurons in order to address the higher rates of oxidative metabolism experienced by the brain. This has led to the conclusion that under normal conditions, vitamin C helps safeguard the integrity of neurons (and therefore the brain), largely through neutralization of the free radicals of reactive oxygen species (ROS). Low levels of blood vitamin C and the resulting accumulation of ROS are thought to be detrimental—especially to aging populations. ## Features - PURE VITAMIN C SUPPLEMENT: Our Vitamin C formula (as Q-C ascorbic acid) in capsule form is manufactured in Scotland and prized for its high quality and reliability - NATURAL IMMUNE SUPPORT: Vitamin C helps support the body with antioxidants, helping with overall immune health. It is an essential cofactor for important enzyme systems - HIGH 1000 MG POTENCY: Each veggie capsule delivers 1000 mg of Vitamin C, providing strong antioxidant support while helping maintain a healthy immune system and overall wellness - PROVEN INGREDIENTS: Our vit C capsules are non-GMO, gluten free, soy free, and vegan, with 120 veggie caps per bottle to deliver natural antioxidant and immune support - DOCTOR'S BEST: Good nutrition starts with sound science. For over 35 years, we have been dedicated to providing only thoroughly researched, rigorously tested, and clinically-approved supplements ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B005CD3J4O | | ASIN | B005CD3J4O | | Age Range Description | Adult | | Allergen Information | Gluten Free | | Best Sellers Rank | #9,620 in Health & Household ( See Top 100 in Health & Household ) #67 in Vitamin C Supplements #986 in Sales & Deals #1,340 in Diet & Sports Nutrition | | Brand Name | Doctor's BEST | | Color | No Color | | Container Type | Bottle | | Customer Reviews | 4.8 4.8 out of 5 stars (10,305) | | Date First Available | July 12, 2011 | | Diet Type | Vegan | | Dosage Form | 1000 | | Flavor | Unflavored | | Global Trade Identification Number | 00753950002579, 00753950003842 | | Item Dimensions | 2.63 x 2.63 x 5 inches | | Item Form | Capsule | | Item Weight | 6.4 ounces | | Item model number | DRB-00257 | | Manufacturer | Doctor's Best | | Manufacturer | Doctor's Best | | Manufacturer Part Number | DRB-00257 | | Model Name | Vitamin C with QualiC 1000 mg - Veggie Caps | | Model Number | DRB-00257 | | Number of Items | 1 | | Primary Supplement Type | Vitamin C | | Product Benefits | Immune Support | | Product Dimensions | 2.63 x 2.63 x 5 inches; 6.4 ounces | | Special Ingredients | Q-C is a brand ascorbic acid mfg. in Scotland, Vitamin C contains Quali-C | | Specific Uses For Product | Healthy Immune System, Antioxidant | | UPC | 753950002579 301653928452 753950003842 | | Unit Count | 120 Count | ## Product Details - **Brand:** Doctor's BEST - **Diet Type:** Vegan - **Flavor:** Unflavored - **Item Form:** Capsule - **Primary Supplement Type:** Vitamin C ## Images ![Doctors Best Vitamin C with Quali-C 1000mg 120 VegCap - Image 1](https://m.media-amazon.com/images/I/61UkBeIMl4L.jpg) ## Available Options This product comes in different **Size, Flavor** options. ## Questions & Answers **Q: What is the absorbing acid made from? Why not use a fruit acid?** A: First of all it's Ascorbic acid. This particular Vitamin C is a brand of ascorbic acid made by DSM which is the last and only Western producer of vitamin C! All their vitamin C is produced in a world-class DSM-owned facility in Dalry, Scotland. In fact, DSM/Roche was the first company to synthesise vitamin C back in 1938, and has been a leading producer for over 75 years. Quali®-C is the world’s first branded vitamin C, and buying it guarantees you the peace of mind you can only get from the best supplier. Also, to further clarify, Ascorbic acid is found in citrus fruits as well as citric acid, but citric acid does not contain Vitamin C. Ascorbic acid is natural, citric acid is man-made, hence, synthetic. If you want more in-depth information though about this particular product, visit this website: http://www.nutraingredients.com/Suppliers2/DSM-talks-vitamin-quality-with-Quali-C-brand **Q: It is bitter and tart (very acidic)? i saw reviews of other vitamin c powder of quali-c is very tart and acidic, causing heart burn and hard on tummy.** A: I have not had this experience and I take 3 grams most days **Q: Where are this made ?It does not say it anywhere.** A: It is made in the US. Doctor's Best is now owned by the Kingdomway Group, a publicly traded company in China. According to an article I read the primary reason Kingdomway purchased Doctor’s Best was to provide an authentic, manufactured in the USA brand to the rapidly expanding market in Asia. **Q: No stearate or stearic acids is wonderful however it does not contain rose hip, isnt that a requirement for vitamin c absorbtion can anyone clearify?** A: Definitely not a requirement. Vitamin C is water soluble, meaning all it needs for absorption is water. Most vitamin C supplements don't contain rose hips. ## Frequently Bought Together - 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 - Doctors BEST High Absorption Magnesium Lysinate Glycinate 100% Chelated, Muscle Relaxation & Sleep Support, Non-GMO, Gluten Free, Soy Free, Vegan, 100% Chelated 240 Tablets - Doctor's Best Purified & Clear Omega 3 Fish Oil with Goldenomega, Supports Heart, Eye, Brain, & Joint Health, Non-GMO, Gluten Free 120 Marine Softgels --- ## 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.us/products/4783723-doctors-best-vitamin-c-with-quali-c-1000mg-120-vegcap](https://www.desertcart.us/products/4783723-doctors-best-vitamin-c-with-quali-c-1000mg-120-vegcap) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-08-13*