---
product_id: 6961700
title: "Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets"
brand: "source naturals"
price: "2253 kr"
currency: ISK
in_stock: null
reviews_count: 10
url: https://www.desertcart.is/products/6961700-niacinamide-b-3-100-mg-dietary-supplement-250-tablets
store_origin: IS
region: Iceland
---

# 100 mg pure Niacinamide per tablet Supports 50+ enzymatic metabolic reactions Made in USA, cGMP & FDA compliant Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets

**Brand:** source naturals
**Price:** 2253 kr
**Availability:** ❌ Out of Stock

## Summary

> 💥 Unlock your inner glow with every tablet — because wellness waits for no one!

## Quick Answers

- **What is this?** Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets by source naturals
- **How much does it cost?** 2253 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/6961700-niacinamide-b-3-100-mg-dietary-supplement-250-tablets)

## Best For

- source naturals enthusiasts

## Why This Product

- Trusted source naturals brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Trusted Legacy:** Over 40 years of proven quality from Source Naturals, a pioneer in wellness since 1982.
- • **Clean & Pure Formula:** Free from gluten, dairy, soy, yeast, and artificial additives—because your body deserves the best.
- • **Daily Dose of Vitality:** Just 1 tablet daily fuels your metabolism and skin health with potent vitamin B-3.
- • **Metabolic & Mood Support:** Enhances enzymatic functions and promotes a calming effect to keep you balanced and energized.
- • **Skin & Appetite Benefits:** Niacinamide’s subtle power helps improve skin appearance and supports healthier food cravings.

## Overview

Source Naturals Niacinamide B-3 delivers a pure 100 mg dose of vitamin B-3 per tablet, supporting over 50 enzymatic metabolic reactions essential for energy and skin health. Manufactured in the USA under strict cGMP and FDA guidelines, this supplement is free from common allergens and artificial additives. Trusted for over 40 years, it offers a clean, effective way to enhance your daily wellness routine with just one tablet a day.

## Description

Buy Source Naturals Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Great product - I used Slo-niacin 750mg daily for 4 months at dinner time, two years ago. It helped me loose weight. But it did create heavy flushing for me. While taking it I felt I could not drink alcohol, because it made the flushing worse. When I eat healthy, the flushing felt kind of nice. Also sometimes i would get dizzy when working out. So for me slo-niacin could only be temporary. I was missing the feeling and benefits of slo-niacin, so I tried smaller doses of both niacin and nicotinamide. I tried 100mg, 200mg, and 300mg of each. For me, with no particular health issues at the moment, I felt having 200mg nicotinamide at breakfast and 200mg nicotinamide at dinner felt great. I had less appetite, and craved healhtier foods more. Also it had a calming effect. I was able to drink a few beers a week with nicotinamide at this does and not feel any negative effects (for me that 5 beers total in 1 week, 1-2 per day, three days a week). So for me personally, nicotinamide is good for overall health. I like the skin benefits, mood calming, the feeling of liking healthier foods more, and appetite suppressant effects. In the near future I will likely reduce my 400mg per day to 100mg a day to see if it still has a similar effect, and then likely will move it up to 200mg per day. I try to just take the amount I need, and no more. Because taking too much of a supplement can deplete other nutrients.
Review: Really good product - Really good product

## Features

- Niacinamide, also known as vitamin B-3, functions in over 50 metabolic reactions, most of which are enzymatic.
- Suggested Use: 1 tablet daily.
- Well Made Supplement: Contains no yeast, dairy, egg, gluten, corn, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.
- Over 40 Years of Trust. Source Naturals was created in 1982 by CEO Ira Goldberg to support everyone’s potential to enjoy optimal health.
- Manufactured in the USA. Manufactured in Scotts Valley, CA, under the Good Manufacturing Practices (cGMPs) established by the US Food and Drug Administration (FDA).

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B00020I7IU |
| Best Sellers Rank | #33,150 in Health & Household ( See Top 100 in Health & Household ) #43 in Vitamin B3 (Niacin) Supplements #2,351 in Sales & Deals |
| Customer Reviews | 4.6 4.6 out of 5 stars (754) |
| Date First Available  | February 16, 2004 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | SN0504 |
| Manufacturer  | Threshold Enterprises |
| Product Dimensions  | 4.6 x 4.6 x 8.6 inches; 2.88 ounces |

## Product Details

- **Brand:** Source Naturals
- **Diet Type:** Vegetarian
- **Flavor:** Unflavored
- **Item Form:** Tablet
- **Primary Supplement Type:** Vitamin-b

## Images

![Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets - Image 1](https://m.media-amazon.com/images/I/61zlT2x9x9L.jpg)
![Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets - Image 2](https://m.media-amazon.com/images/I/71G5jbsCK+L.jpg)
![Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets - Image 3](https://m.media-amazon.com/images/I/71HokdSetBL.jpg)
![Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets - Image 4](https://m.media-amazon.com/images/I/71QVOtkcFVL.jpg)
![Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets - Image 5](https://m.media-amazon.com/images/I/71uA8PW6L8L.jpg)

## Questions & Answers

**Q: Is this nicotinamide?**
A: http://www.life-enhancement.com/magazine/article/1366-explaining-niacin-niacinamide-and-nicotinamide

**Q: Are these time release tablets?**
A: not time release. and eventually didn't use it.

**Q: This description says flush free abut I just got my bottle and it doesn't say it.  So I looked and this pictured bottle doesn't say flush free, is thi**
A: Niacinamide is flush free.

**Q: Is this flush free?**
A: I have not had a problem with flushing with these and I have taken them about three years.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great product
*by N***A on December 10, 2023*

I used Slo-niacin 750mg daily for 4 months at dinner time, two years ago. It helped me loose weight. But it did create heavy flushing for me. While taking it I felt I could not drink alcohol, because it made the flushing worse. When I eat healthy, the flushing felt kind of nice. Also sometimes i would get dizzy when working out. So for me slo-niacin could only be temporary. I was missing the feeling and benefits of slo-niacin, so I tried smaller doses of both niacin and nicotinamide. I tried 100mg, 200mg, and 300mg of each. For me, with no particular health issues at the moment, I felt having 200mg nicotinamide at breakfast and 200mg nicotinamide at dinner felt great. I had less appetite, and craved healhtier foods more. Also it had a calming effect. I was able to drink a few beers a week with nicotinamide at this does and not feel any negative effects (for me that 5 beers total in 1 week, 1-2 per day, three days a week). So for me personally, nicotinamide is good for overall health. I like the skin benefits, mood calming, the feeling of liking healthier foods more, and appetite suppressant effects. In the near future I will likely reduce my 400mg per day to 100mg a day to see if it still has a similar effect, and then likely will move it up to 200mg per day. I try to just take the amount I need, and no more. Because taking too much of a supplement can deplete other nutrients.

### ⭐⭐⭐⭐⭐ Really good product
*by F***Y on November 15, 2025*

Really good product

### ⭐⭐⭐⭐⭐ Very effective supplement
*by J***. on October 10, 2025*

This is a wonder pill for reducing pain and inflammation in joints. Of course , they can't say that on the bottle or in their advertising. It was recommended by a well known online doctor so I thought I would try it. Low dose 3 x daily. After only a week my knee pain disappeared after a year of limping and misery. I can't guarantee that it will work for your problem but it's worth a try. I am no doctor but I can tell you it worked wonders for me. I'm walking normally for the first time in two years. No I wasn't paid to say this!

## Frequently Bought Together

- Source Naturals Niacinamide B-3, 100 mg Dietary Supplement - 250 Tablets
- Dr. Berg Vitamin D3 K2 w/MCT Powder - Includes 10,000 IU of Vitamin D3, 100 mcg MK7 Vitamin K2, Purified Bile Salts, Zinc & Magnesium for Ultimate Absorption - K2 D3 Vitamin Supplement - 120 Capsule

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-03-03*