--- product_id: 6343215 title: "21st Century Vitamin C 1000mg Prolonged Release Tablets, Immune, 110ct" brand: "21st century" price: "¥3588" currency: JPY in_stock: true category: "21st Century" url: https://www.desertcart.jp/products/6343215-21st-century-vitamin-c-1000mg-prolonged-release-tablets-immune-110ct store_origin: JP region: Japan --- # Prolonged-release formula Vegan, non-GMO, gluten-free 1000mg potent dose 21st Century Vitamin C 1000mg Prolonged Release Tablets, Immune, 110ct **Brand:** 21st century **Price:** ¥3588 **Availability:** ✅ In Stock ## Summary > 💥 Unlock all-day immune power with every tablet! ## Quick Answers - **What is this?** 21st Century Vitamin C 1000mg Prolonged Release Tablets, Immune, 110ct by 21st century - **How much does it cost?** ¥3588 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/6343215-21st-century-vitamin-c-1000mg-prolonged-release-tablets-immune-110ct) ## Best For - 21st century enthusiasts ## Why This Product - Trusted 21st century brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Ready for Every Season:** Perfect for cold season, travel, and busy lifestyles demanding extra immune backup - • **Trusted for Over 34 Years:** Decades of quality assurance from a leading supplement brand - • **Clean & Conscious Wellness:** Vegan, gluten-free, and non-GMO for mindful daily support - • **Steady Immune Boost All Day:** 1000mg vitamin C released gradually for lasting defense - • **Maximized Absorption, Minimal Waste:** Timed-release technology ensures your body uses every milligram ## Overview 21st Century Vitamin C 1000mg Prolonged Release Tablets deliver a potent, steady dose of vitamin C throughout the day to support immune health and antioxidant defense. This vegan, non-GMO, and gluten-free formula maximizes absorption with a timed-release design, trusted for over 34 years and crafted in an FDA-registered facility. Ideal for daily use during cold seasons, travel, or whenever your immune system needs a reliable boost. ## Description 21st Century Prolonged Release Vitamin C 1000 mg Tablets for Trusted Immune Health Support*Support your immune health with 21st Century Vitamin C 1000 mg tablets. Each tablet delivers a potent dose of vitamin C, an essential nutrient that helps support your body’s natural defenses*. Known for its antioxidant properties, vitamin C also helps combat free radicals, promoting overall wellness.*Prolonged release of vitamin C provides this nutrient over time, ensuring consistent absorption. This timed-release formula helps maintain immune support throughout the day. The gluten-free formula ensures that individuals with dietary restrictions can enjoy the benefits of this powerful supplement. Adults can take one tablet daily with any meal or as directed by a healthcare provider. Contains no added sugar, salt, yeast, preservatives, or artificial flavors.With over 30 years of expertise, 21st Century Vitamins maintains high standards to ensure each product supports your wellness needs. From sourcing premium ingredients to rigorous testing and production, every product meets purity benchmarks.*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. ## Features - ALL-DAY IMMUNE AND ANTIOXIDANT SUPPORT: A robust 1000 mg of vitamin C to help support your immune system and provide antioxidant defense, in a prolonged-release tablet that works steadily through the day.* - PROLONGED RELEASE, LESS WASTE: Your body can only use so much vitamin C at once, so this tablet releases it gradually, helping you get more from each 1000 mg dose than a standard tablet. - CLEAN, VEGAN, EVERYDAY-READY: Vegan, non-GMO, and gluten free, pure ascorbic acid vitamin C support with nothing extra, ready for daily use by men and women. - FOR COLD SEASON AND DAILY DEFENSE: Keep it on hand year-round for immune support during winter, travel, and busy stretches when your body needs backup.* - 110 TABLETS, TRUSTED FOR 34+ YEARS: Months of daily immune support, made in the USA from domestic and globally sourced ingredients in an FDA-registered facility and quality-tested by a brand trusted for over three decades. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0007PQAX4 | | ASIN | B0007PQAX4 | | Age Range Description | Adult | | Allergen Information | Gluten Free | | Best Sellers Rank | #51,645 in Health & Household ( See Top 100 in Health & Household ) #315 in Vitamin C Supplements #2,807 in Sales & Deals | | Brand Name | 21st Century | | Color | No Color | | Container Type | Bottle | | Customer Reviews | 4.8 4.8 out of 5 stars (753) | | Date First Available | October 2, 2002 | | Diet Type | Gluten Free | | Dosage Form | Tablet | | Dose Release Method | Extended Release | | Flavor | Unflavored | | Global Trade Identification Number | 00740985212257 | | Item Dimensions | 2.38 x 1.75 x 6 inches | | Item Form | Tablet | | Item Highlight | Vitamin C 1000 mg Prolonged-Release Ascorbic Acid, Immune & Antioxidant Support, Steady All-Day Release for Men & Women | | Item Weight | 6.56 ounces | | Item model number | 21225 | | Manufacturer | 21st Century | | Manufacturer | 21st Century | | Manufacturer Part Number | 21225 | | Model Name | 21st Century Vitamin C 1000mg Prolonged Release Tablets (110 Count), Immune Support Vitamin C Supplement, Antioxidant Support, Non-GMO & Gluten Free | | Model Number | 21225 | | Number of Items | 1 | | Pill Coating | Gelatin | | Primary Supplement Type | Vitamin C | | Product Benefits | Immune Support | | Product Dimensions | 2.38 x 1.75 x 6 inches; 6.5 ounces | | Specific Uses For Product | Immunity | | Supplement Formulation | Individual Supplement | | UPC | 784922867087 740985212257 | | Unit Count | 110 Count | ## Product Details - **Brand:** 21st Century - **Diet Type:** Gluten Free - **Flavor:** Unflavored - **Item Form:** Tablet - **Primary Supplement Type:** Vitamin C ## Images ![21st Century Vitamin C 1000mg Prolonged Release Tablets, Immune, 110ct - Image 1](https://m.media-amazon.com/images/I/71hhC51EeyL.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - 21st Century C 1000 mg Prolonged Release Tablets 110 Count - 21st Century Zinc 50 Mg (Chelated) Tablets, 110 Count (Pack of 1) - 21st Century D 5000 IU Tablets, 110 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.jp/products/6343215-21st-century-vitamin-c-1000mg-prolonged-release-tablets-immune-110ct](https://www.desertcart.jp/products/6343215-21st-century-vitamin-c-1000mg-prolonged-release-tablets-immune-110ct) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-17*