---
product_id: 11979895
title: "21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count"
brand: "21st century"
price: "NT$557"
currency: TWD
in_stock: true
reviews_count: 13
category: "21st Century"
url: https://www.desertcart.tw/products/11979895-21st-century-b-12-1000-mcg-prolonged-release-tablets-110
store_origin: TW
region: Taiwan
---

# Prolonged release formula Gluten-free & vegan-friendly 1000 mcg B12 per tablet 21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count

**Brand:** 21st century
**Price:** NT$557
**Availability:** ✅ In Stock

## Summary

> ⚡ Power your day with B12 brilliance — don’t get left behind!

## Quick Answers

- **What is this?** 21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count by 21st century
- **How much does it cost?** NT$557 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tw](https://www.desertcart.tw/products/11979895-21st-century-b-12-1000-mcg-prolonged-release-tablets-110)

## 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

- • **Trusted & Proven:** Top-rated with 4.7 stars from nearly 6,000 reviews—join the wellness movement.
- • **Clean & Conscious:** Gluten-free, non-GMO, and vegan—perfect for mindful lifestyles.
- • **High Potency Dose:** 1000 mcg per tablet delivers a powerful, effective B12 punch.
- • **Compact & Convenient:** Small, unflavored tablets dissolve quickly for easy daily use on the go.
- • **Sustained Energy Boost:** Prolonged release ensures steady B12 absorption for all-day vitality.

## Overview

21st Century B12 1000 mcg Prolonged Release Tablets provide a potent, steady dose of vitamin B12 to support healthy blood cells and tissue maintenance. With a gluten-free, vegan-friendly formula and top-tier customer ratings, these tablets offer an effective, convenient way to boost energy and overall wellness.

## Description

Promote healthy tissues and blood cells with 21st Century Vitamin B-12. This member of the B complex, also known as cyanocobalamin, promotes the grown and maintenance of tissue and is essential for red blood cell formation.

Review: Definitely work! - These B12 supplements have been great. About a year ago I found out I was quite low on B12. I actually had to get B12 shots for a while. After I was back to a more normal level I was told to use these. I was worried that supplements wouldn’t help, but these dissolve right under your tongue and so it goes right to your bloodstream. When I went back recently I was actually at the high end of normal!! These dissolve pretty quickly, taste alright, and are pretty small. Definitely would recommend.
Review: Value + - The 21st Century B12 1000 mcg Prolonged Release Tablets are a real bargain. I’ve noticed a difference in my energy levels, and the prolonged-release formula makes them easy on the system. Good quality, effective, and very affordable—definitely recommend if you need a reliable B12 supplement.

## Features

- Energy Support
- Vitamin Supplement
- Gluten Free
- Non-GMO
- Suitable For Vegans

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0007PQARK |
| ASIN  | B0007PQARK |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #14,168 in Health & Household ( See Top 100 in Health & Household ) #81 in Vitamin B12 Supplements #1,339 in Sales & Deals |
| Brand Name | 21st Century |
| Color | No Color |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,951) |
| Date First Available  | October 2, 2002 |
| Diet Type | Gluten Free |
| Dosage Form | 1000 |
| Flavor | Unflavored |
| Global Trade Identification Number | 00740985211045 |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions | 2.38 x 1.75 x 3.75 inches |
| Item Form | Tablet |
| Item Weight | 55 Grams |
| Item model number  | 21104 |
| Manufacturer | 21st Century |
| Manufacturer  | 21st Century |
| Model Name | See packaging |
| Number of Items | 1 |
| Primary Supplement Type | Vitamin B2 |
| Product Benefits | Antioxidant |
| Product Dimensions  | 2.38 x 1.75 x 3.75 inches; 1.94 ounces |
| Specific Uses For Product | Heart |
| UPC | 740985211045 |
| Unit Count | 110 Count |

## Product Details

- **Brand:** 21st Century
- **Diet Type:** Gluten Free
- **Flavor:** Unflavored
- **Item Form:** Tablet
- **Primary Supplement Type:** Vitamin B2

## Images

![21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count - Image 1](https://m.media-amazon.com/images/I/71bJQVuT68L.jpg)

## Available Options

This product comes in different **Size, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Definitely work!
*by L***N on June 18, 2025*

These B12 supplements have been great. About a year ago I found out I was quite low on B12. I actually had to get B12 shots for a while. After I was back to a more normal level I was told to use these. I was worried that supplements wouldn’t help, but these dissolve right under your tongue and so it goes right to your bloodstream. When I went back recently I was actually at the high end of normal!! These dissolve pretty quickly, taste alright, and are pretty small. Definitely would recommend.

### ⭐⭐⭐⭐⭐ Value +
*by P***T on December 16, 2025*

The 21st Century B12 1000 mcg Prolonged Release Tablets are a real bargain. I’ve noticed a difference in my energy levels, and the prolonged-release formula makes them easy on the system. Good quality, effective, and very affordable—definitely recommend if you need a reliable B12 supplement.

### ⭐⭐⭐⭐⭐ B12
*by T***A on November 5, 2025*

Great flavor. Great price

## Frequently Bought Together

- 21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count
- 21st Century Slow Release Iron Tablets, 60 Count
- 21st Century D 5000 IU Tablets, 110 Count

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**Shop now:** [https://www.desertcart.tw/products/11979895-21st-century-b-12-1000-mcg-prolonged-release-tablets-110](https://www.desertcart.tw/products/11979895-21st-century-b-12-1000-mcg-prolonged-release-tablets-110)

---

*Product available on Desertcart Taiwan*
*Store origin: TW*
*Last updated: 2026-03-13*