--- product_id: 9230173 title: "21st Century Niacinamide 500mg Prolonged Release, No Flush, 110 Count | Vitamin B-3 Niacinamide 500 mg, Energy Metabolism & Skin Health Support, No-Flush Formula, Prolonged Release, Non-GMO Tablets" brand: "21st century" price: "¥3093" currency: JPY in_stock: true category: "21st Century" url: https://www.desertcart.jp/products/9230173-21st-century-niacinamide-500mg-prolonged-release-no-flush-110-count store_origin: JP region: Japan --- # Prolonged release for steady nutrient delivery 500mg Niacinamide for energy boost Non-GMO & vegan-friendly purity 21st Century Niacinamide 500mg Prolonged Release, No Flush, 110 Count | Vitamin B-3 Niacinamide 500 mg, Energy Metabolism & Skin Health Support, No-Flush Formula, Prolonged Release, Non-GMO Tablets **Brand:** 21st century **Price:** ¥3093 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your energy and glow—without the flush! ## Quick Answers - **What is this?** 21st Century Niacinamide 500mg Prolonged Release, No Flush, 110 Count | Vitamin B-3 Niacinamide 500 mg, Energy Metabolism & Skin Health Support, No-Flush Formula, Prolonged Release, Non-GMO Tablets by 21st century - **How much does it cost?** ¥3093 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/9230173-21st-century-niacinamide-500mg-prolonged-release-no-flush-110-count) ## 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 - • **Clean & Pure:** Free from sugar, salt, yeast, preservatives, artificial flavors, and colors. - • **Trusted Quality:** Manufactured in a cGMP facility with 30+ years of proven excellence. - • **No-Flush Comfort:** Enjoy all the benefits of niacinamide without the uncomfortable flush. - • **Skin & Nerve Support:** Supports radiant skin and healthy nervous system function. - • **Sustained Energy Release:** Prolonged release formula fuels your day without the crash. ## Overview 21st Century Niacinamide 500mg offers a potent, no-flush vitamin B-3 supplement with a prolonged release formula designed to support energy metabolism, skin health, and nervous system function. Non-GMO, vegan, and free from common additives, it’s crafted under strict quality standards to deliver purity and potency in every tablet. ## Description Vitamin B-3 plays a key role in converting food into energy and helps maintain the normal function of nerves, skin, and the digestive system. Niacinamide is a good source of vitamin B-3 without the flushing effect associated with niacin. Unconditionally guaranteed for purity, freshness and label potency. No added Sugar, Salt, Yeast, Preservatives, Artificial Flavors or Colors. 21st Century Vitamins and Supplements are manufactured in a cGMP facility under the strictest standards for product quality, including potency and purity. 21st Century prides itself on providing you with a great product at the best value. This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. ## Features - Niacin (vitamin B-3) plays a role in energy metabolism.* Niacinamide is a good source of vitamin B-3 with a lower flushing effect than that of niacin.* - Prolonged release vitamins slowly release nutrients into the body over an extended period of time. - No added Sugar, Salt, Yeast, Preservatives, Artificial Flavors or Colors. Gluten Free. Suitable for Vegans. Non-GMO. - 21st Century HealthCare manufactures over 500 vitamins and nutritional supplements that are trusted to be 100% safe, contain the purest ingredients and are guaranteed for label potency. - For over 30 years, 21st Century HealthCare has been dedicated to manufacturing only the highest quality vitamins and supplements in Tempe, Arizona. - 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004SCKMQS | | ASIN | B004SCKMQS | | Age Range Description | Adult | | Allergen Information | Gluten Free | | Best Sellers Rank | #7,649 in Health & Household ( See Top 100 in Health & Household ) #8 in Vitamin B3 (Niacin) Supplements #848 in Sales & Deals | | Brand Name | 21st Century | | Color | No Color | | Customer Reviews | 4.6 4.6 out of 5 stars (5,478) | | Date First Available | February 3, 2010 | | Diet Type | Vegan | | Dosage Form | Tablet | | Flavor | Unflavored | | Global Trade Identification Number | 00740985225509 | | Item Dimensions | 2 x 3 x 4 inches | | Item Form | Tablet | | Item Weight | 8 ounces | | Item model number | 22550 | | Manufacturer | 21st Century | | Manufacturer | 21st Century | | Manufacturer Part Number | B00375BOKU | | Model Name | av2023-21st Century-mg prolonged release tablets-5f0674d8 | | Model Number | 22550 | | Number of Items | 1 | | Primary Supplement Type | Vitamin-b | | Product Benefits | Helps convert food into energy and helps maintain skin, digestive and nervous systems | | Product Dimensions | 2 x 3 x 4 inches; 8 ounces | | Special Ingredients | Gluten Free | | Specific Uses For Product | Digestive,Skin,Energy | | UPC | 740985225509 | | Unit Count | 110 Count | ## Product Details - **Brand:** 21st Century - **Diet Type:** Vegan - **Flavor:** Unflavored - **Item Form:** Tablet - **Primary Supplement Type:** Vitamin-b ## Images ![21st Century Niacinamide 500mg Prolonged Release, No Flush, 110 Count | Vitamin B-3 Niacinamide 500 mg, Energy Metabolism & Skin Health Support, No-Flush Formula, Prolonged Release, Non-GMO Tablets - Image 1](https://m.media-amazon.com/images/I/718AmBilbvL.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: Are they actually made right in Tempe AZ** A: Yeap **Q: What is the size of these tablets?** A: the size of the cathedral door **Q: why there is Niacin and Niacinamide of the B3, what is the difference** A: Niacin has more uses and positive effects but can cause flushing. Niacinamide doesn't have as many positive effects but will not cause flushing. **Q: Why did the manufacturer make these with talc? it says <2%, but if one takes this every day it adds up!** A: I am not sure. I have not purchased this product since adding PEG to the additional ingredients. Search for a manufacturer that makes niacinamide with as little 'bad' ingredients as possible. ## Frequently Bought Together - 21st Century Niacinamide 500 mg Prolonged Release Tablets, 110 Count - Nature Made Vitamin B12 1000 mcg, Dietary Supplement for Energy Metabolism Support, 150 Softgels, 150 Day Supply --- ## 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/9230173-21st-century-niacinamide-500mg-prolonged-release-no-flush-110-count](https://www.desertcart.jp/products/9230173-21st-century-niacinamide-500mg-prolonged-release-no-flush-110-count) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-07*