---
product_id: 11979895
title: "21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count"
brand: "21st century"
price: "€ 16.12"
currency: EUR
in_stock: true
reviews_count: 13
category: "21st Century"
url: https://www.desertcart.es/products/11979895-21st-century-b-12-1000-mcg-prolonged-release-tablets-110
store_origin: ES
region: Spain
---

# Prolonged release for steady absorption 1000 mcg B12 for sustained energy Vegan & Non-GMO, clean nutrition 21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count

**Brand:** 21st century
**Price:** € 16.12
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your energy, naturally and steadily!

## Quick Answers

- **What is this?** 21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count by 21st century
- **How much does it cost?** € 16.12 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/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

- • **Sustained Energy Boost:** 1000 mcg B12 delivers long-lasting vitality to power your busy days.
- • **Clean & Conscious Choice:** Gluten-free, Non-GMO, and vegan-friendly to fit your mindful lifestyle.
- • **Highly Rated & Affordable:** Top-ranked with 4.7 stars from thousands of users—premium quality without the premium price.
- • **Prolonged Release Formula:** Gradual absorption ensures steady B12 levels without energy crashes.
- • **Clinically Trusted Support:** Promotes healthy red blood cells and tissue maintenance for overall wellness.

## Overview

21st Century B12 1000 mcg Prolonged Release Tablets provide a potent, vegan-friendly vitamin B12 supplement designed for sustained energy and healthy blood cell production. With a prolonged-release formula, these gluten-free, non-GMO tablets support tissue maintenance and are highly rated for effectiveness and value.

## 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 |
| Best Sellers Rank | #14,978 in Health & Household ( See Top 100 in Health & Household ) #88 in Vitamin B12 Supplements #1,429 in Sales & Deals |
| Customer Reviews | 4.7 4.7 out of 5 stars (5,923) |
| Date First Available  | October 2, 2002 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | 21104 |
| Manufacturer  | 21st Century |
| Product Dimensions  | 2.38 x 1.75 x 3.75 inches; 1.94 ounces |

## 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/511n01maG2L.jpg)
![21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count - Image 2](https://m.media-amazon.com/images/I/514bd7UfzLL.jpg)
![21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count - Image 3](https://m.media-amazon.com/images/I/51Dyi8Ky3LL.jpg)
![21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count - Image 4](https://m.media-amazon.com/images/I/51Eaq7nHNML.jpg)
![21st Century B 12 1000 mcg Prolonged Release Tablets, 110 Count - Image 5](https://m.media-amazon.com/images/I/51Tqxz8t9xL.jpg)

## 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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---

*Product available on Desertcart Spain*
*Store origin: ES*
*Last updated: 2026-01-31*