---
product_id: 6167602
title: "B-100 Complex Prolonged Release Tablets, 60 Count (Pack of 1), High Potency Vitamin B Complex for Nervous System, Energy Support, Includes Vitamin B1, B2, B6, Biotin & Calcium"
brand: "21st century"
price: "€ 17.23"
currency: EUR
in_stock: true
reviews_count: 11
category: "21st Century"
url: https://www.desertcart.pt/products/6167602-b-100-complex-prolonged-release-tablets-60-count-pack-1
store_origin: PT
region: Portugal
---

# Prolonged release for steady nutrient delivery 100mg B-Vitamins per tablet Gluten-free & non-GMO premium formula B-100 Complex Prolonged Release Tablets, 60 Count (Pack of 1), High Potency Vitamin B Complex for Nervous System, Energy Support, Includes Vitamin B1, B2, B6, Biotin & Calcium

**Brand:** 21st century
**Price:** € 17.23
**Availability:** ✅ In Stock

## Summary

> ⚡ Unlock your day with steady energy and sharp focus — the B-100 advantage!

## Quick Answers

- **What is this?** B-100 Complex Prolonged Release Tablets, 60 Count (Pack of 1), High Potency Vitamin B Complex for Nervous System, Energy Support, Includes Vitamin B1, B2, B6, Biotin & Calcium by 21st century
- **How much does it cost?** € 17.23 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/6167602-b-100-complex-prolonged-release-tablets-60-count-pack-1)

## 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

- • **Easy Daily Routine:** One tablet a day with meals keeps your energy and focus on point, no hassle ⏰
- • **Trusted for Decades:** 30+ years of quality assurance from 21st Century, a brand professionals rely on 🏆
- • **Nervous System Support:** Powerful B1, B6 & B12 blend to keep your nerves sharp and resilient 🧠
- • **Sustained Energy Boost:** Prolonged release tablets deliver B vitamins steadily for all-day vitality ⚡
- • **Clean & Conscious Formula:** Gluten-free, non-GMO, no artificial additives—pure wellness you can trust 🌿

## Overview

21st Century B-100 Complex Prolonged Release Tablets provide a potent blend of essential B vitamins including B1, B2, B6, biotin, and calcium in a gluten-free, non-GMO formula. Designed for adults seeking sustained energy and nervous system support, these tablets release nutrients gradually for all-day effectiveness. Trusted for over 30 years, this high-potency vitamin complex is an easy, reliable addition to your daily wellness routine.

## Description

Prolonged release vitamins slowly release nutrients into the body over an extended period of time

Review: !!!!! Good B 100 Complex Cablets !!!!. - !!!! Good Product !!!! I Had Been Used This Product For A While And I Love It, Is Easy To Swallow, But The Best Is The Long Expiration Date Of It And The Value For The Money. Thank You For The Nice Delivered !!!!!.
Review: Do your homework. - When I bought these awhile back they were just an inexpensive B complex to me, like the 4 other different B complex bottles I had. Then I had a problem where my nerves were injured, and learned B1, B6, and B12 all helped. I started taking another brand, and nothing happened. I figured maybe they had been damaged by summer heat. I tried these next, and noticed a difference in a few hours. That seemed a bit odd so I compared all the bottles. The other bottles were crap and I immediately threw them out. Most were not time release, some almost no actual vitamin value, and the ones that did often had a serving size of multiple pills. These were BY FAR the best, and they are priced nicely, so I am here writing this review as I buy two more bottles.

## Features

- SUPPORTS ENERGY CONVERSION & NERVOUS SYSTEM*: Packed with essential B Vitamins, 21st Century B-100 Complex prolonged release tablets helps convert the food you eat into energy, supporting your nervous system and body tissues*
- POTENT VITAMIN-B BLEND: The 21st Century B-100 Complex delivers essential B vitamins like thiamin, riboflavin, niacin, B6, folate, B12, and biotin, which can be naturally found in foods like whole grains, leafy greens, eggs, seeds, and meat
- PREMIUM FORMULA: Made with carefully selected ingredients, this energy complex for adults, women, and men is gluten-free, non-GMO, and free from added yeast, sugar, artificial flavors, or colors, offering support to health-conscious adults
- EASY DAILY NUTRITION: Take one vitamin B-100 daily with any meal or as directed by a healthcare provider. Do not exceed the recommended dosage. Individual results may vary.
- WELLNESS THAT WORKS FOR YOU: For over 30 years, the 21st Century has been proud to offer high-quality, innovative, and trusted vitamin and supplement products to improve the health and well-being of individuals, families, and communities worldwide
- *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 | B0007PQAPM |
| ASIN  | B0007PQAPM |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #48,842 in Health & Household ( See Top 100 in Health & Household ) #129 in Vitamin B-Complex Supplements #2,788 in Sales & Deals |
| Brand Name | 21st Century |
| Color | No Color |
| Customer Reviews | 4.7 4.7 out of 5 stars (801) |
| Date First Available  | October 2, 2002 |
| Diet Type | Gluten Free |
| Dosage Form | Tablet |
| Flavor | Unflavored |
| Global Trade Identification Number | 00740985222829 |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions | 2.38 x 1.75 x 3.75 inches |
| Item Form | Tablet |
| Item Weight | 3.65 ounces |
| Item model number  | 22282 |
| Manufacturer | 21st Century |
| Manufacturer  | 21st Century |
| Material Type Free | en_AE |
| Model Name | 21st Century B 100 Complex Prolonged Release Caplets, 60 Count (Pack of 1) |
| Number of Items | 1 |
| Primary Supplement Type | B-Complex |
| Product Benefits | Energy Management |
| Product Dimensions  | 2.38 x 1.75 x 3.75 inches; 3.65 ounces |
| Specific Uses For Product | Nerve |
| UPC | 740985222829 |
| Unit Count | 60 Count |

## Product Details

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

## Images

![B-100 Complex Prolonged Release Tablets, 60 Count (Pack of 1), High Potency Vitamin B Complex for Nervous System, Energy Support, Includes Vitamin B1, B2, B6, Biotin & Calcium - Image 1](https://m.media-amazon.com/images/I/71EcDGqO8NL.jpg)

## Available Options

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

## Questions & Answers

**Q: Are they easy to swallow? Are the capsules?**
A: I do use these. They are not capsules, but I don't have any problems swallowing them. My multivitamin is twice as big :)

**Q: Keep in refrigerator? i live in a very humid house, no a/c. different brand deteriorated before expiration date.**
A: It won't hurt it to be refrigerated

## Customer Reviews

### ⭐⭐⭐⭐⭐ !!!!! Good B 100 Complex Cablets !!!!.
*by E***A on August 21, 2025*

!!!! Good Product !!!! I Had Been Used This Product For A While And I Love It, Is Easy To Swallow, But The Best Is The Long Expiration Date Of It And The Value For The Money. Thank You For The Nice Delivered !!!!!.

### ⭐⭐⭐⭐⭐ Do your homework.
*by J***C on February 19, 2022*

When I bought these awhile back they were just an inexpensive B complex to me, like the 4 other different B complex bottles I had. Then I had a problem where my nerves were injured, and learned B1, B6, and B12 all helped. I started taking another brand, and nothing happened. I figured maybe they had been damaged by summer heat. I tried these next, and noticed a difference in a few hours. That seemed a bit odd so I compared all the bottles. The other bottles were crap and I immediately threw them out. Most were not time release, some almost no actual vitamin value, and the ones that did often had a serving size of multiple pills. These were BY FAR the best, and they are priced nicely, so I am here writing this review as I buy two more bottles.

### ⭐⭐⭐⭐⭐ century great supplement I recommend it 100%
*by L***S on August 27, 2025*

A very good B complex, it keeps me energized and helps with my joints and nerves. I love this brand. I buy it often.

## Frequently Bought Together

- 21st Century B 100 Complex Prolonged Release Caplets, 60 Count (Pack of 1)
- 21st Century Slow Release Iron Tablets, 60 Count
- 21st Century Zinc 50 Mg (Chelated) Tablets, 110 Count (Pack of 1)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-04-01*