---
product_id: 25624990
title: "Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules"
brand: "dr clark store"
price: "378 kr"
currency: DKK
in_stock: true
reviews_count: 8
category: "Dr Clark Store"
url: https://www.desertcart.dk/products/25624990-dr-clark-niacin-500-vitamin-b3-supplement-500mg-100-gelatin
store_origin: DK
region: Denmark
---

# 500mg pure Niacin dose Supports energy metabolism Boosts cardiovascular health Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules

**Brand:** dr clark store
**Price:** 378 kr
**Availability:** ✅ In Stock

## Summary

> 💥 Unlock your vitality with Dr. Clark’s Niacin 500 – Feel the flush, own the day!

## Quick Answers

- **What is this?** Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules by dr clark store
- **How much does it cost?** 378 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/25624990-dr-clark-niacin-500-vitamin-b3-supplement-500mg-100-gelatin)

## Best For

- dr clark store enthusiasts

## Why This Product

- Trusted dr clark store brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Energize Your Day:** Fuel your metabolism and nervous system with every capsule.
- • **Natural 'Flush' Effect:** Feel the authentic Niacin flush that signals your body’s renewal.
- • **100 Convenient Capsules:** A long-lasting supply designed for your busy lifestyle.
- • **Pure 500mg Niacin Power:** Experience the full potency of Vitamin B3 for maximum benefits.
- • **Heart & Circulation Support:** Promote healthy cholesterol and cardiovascular function.

## Overview

Dr. Clark Niacin 500 delivers a potent 500mg dose of pure Vitamin B3 per capsule, supporting energy production, cardiovascular health, and nervous system function. With 100 gelatin capsules per bottle, it offers a convenient, high-quality supplement designed for professionals seeking to boost metabolism and overall wellness. The natural Niacin flush signals your body’s response and adaptation, enhancing sleep quality and vitality over time.

## Description

Dr. Clark Niacin 500 (Vitamin B3) Supplement delivers 500 mg of high-quality niacin per capsule, supporting overall health and wellness. Niacin, or Vitamin B3, is essential for energy production, cholesterol management, and cardiovascular health. This supplement aids in maintaining healthy metabolism, skin health, and nervous system function. Each bottle contains 100 gelatin capsules, making it a convenient and effective addition to your daily routine. Ideal for those looking to enhance heart health, boost energy levels, and support overall bodily functions, Dr. Clark Niacin 500 offers comprehensive benefits for a balanced lifestyle.

Review: Only buy Dr. Clark's Vitamins the cleanest and best. - Miracle vitamin B3 from Dr. Clark best on the market
Review: For a good night's sleep -- Niacin *with the "flush" effect.... - I've been having a lot of problems sleeping. My significant other passed away several months ago after 5 years of our intensely battling his illness to slow it down as much as we could. I was waking up several times a night -- not able to fall asleep, etc. I didn't want to go on another prescription and a friend of mine -- who is into more holistic medicine - recommended Niacin at 500 mg. It worked. My sleep is much improved, I still wake up in the middle of the night but now it is only once and I am much more rested when I do get up -- no hangover as I would have had from either over-the-counter sleep aids or prescription ones. PLEASE NOTE: This is Niacin B3 which has not been blended with other ingredients to remove the "flush" that is a body's natural response to Niacin. However, once those neutralizing ingredients, are mixed in, the power of the Niacin is also diminished - and will not produce the aid to sleep you want - if that is what you're taking Niacin for. The "flush", if you are not prepared for it to occur, can have rather frightening physical effects early on in taking it. The effects on subsequent nights fade rather quickly as your body adjusts to it. As I understand it, though I have not researched this well enough to confirm -- one's flush" reaction is because your body is too low on Niacin. The "flush" effect diminshes every night until after several days it is minmal and over time will go away altogther. But you need to be prepared for what you are going to feel the first time -- or it will scare the bejesus out of you. What happens, within about 1/2 an hour, your body starts to turn very red (hence the name "flush" and it keeps getting worse for a while and your skin starts to itch terribly. Again remember -- this severe effect is at it's most extreme the first time you take the pill. The next night is a fraction of the first night's flush. But the first night can be really scary. It can feel like you are having an extreme allergic reaction to the Niacin. But you need to remember - it is not an allergic reaction -- it is just how your body is responding to getting the additional Niacin it needs. The "flush" lasts under an hour and then goes away. The next night it's less so and so on. Within a week or so, you should be able to take the Niacin just before you fall asleep and sleep through the decreasing amount of your body's reaction. Eventually, the "flush" disappears altogether. Once in a while I will feel a bit of th eitching - but that's rarely. However, -- the night's sleep is so incredibly improved -- you will start to feel like a new person. I can't imagine going to bed wihtout it now. If you purchase a version of Niacin that is promoted as "flush-free" you will not get the sleep benefits you are seeking if that is why you are taking the Niacin. To me, "flush-free" is a waste of money and a loss of good nights of sleep. I picked Dr. Clark's version of Niacin after a lot of research. I wanted the purest, most organic form of the drug. Supplements are not government regulated - and as a result, a lot of companies advertise a lot more of the ingredient than their supplements acutally have. The supplemts are often mixed with ingredients that are not the healthiest for you. I don't have proof, but I've researched Dr. Clark's products enough to feel confident that this product is extremely pure and contains, pretty much, the amount of Niacin its label claims. I don't think I would have had such an extreme version of the "flush" the first night, if that weren't the case. *** On an additional note -- you can also purchase a bottle of Dr. Clark's 100 mg Niacin and build up over several days to 500 mg - which will make ht e"flush" less severe at the start -- but you will still feel and you will still have to remind yourself that your body's response to th eNiacin will pass within the hour.

## Features

- High doses of Niacin can cause flushing*
- Supports the nervous and circulatory systems*
- Promotes energy production*
- Aids in healthy digestion*
- Niacin 500 mg capsules

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B00XLZTBOC |
| Best Sellers Rank | #238,773 in Health & Household ( See Top 100 in Health & Household ) #370 in Vitamin B3 (Niacin) Supplements |
| Customer Reviews | 4.4 4.4 out of 5 stars (31) |
| Date First Available  | May 13, 2015 |
| Is Discontinued By Manufacturer  | No |
| Manufacturer  | Dr. Clark Store |
| Product Dimensions  | 2 x 2 x 3.8 inches; 2.89 ounces |

## Product Details

- **Brand:** Dr Clark Store
- **Diet Type:** Gluten Free
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Primary Supplement Type:** Vitamin-b

## Images

![Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules - Image 1](https://m.media-amazon.com/images/I/41IM+ogaHpL.jpg)
![Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules - Image 2](https://m.media-amazon.com/images/I/41rE3uWLJRL.jpg)
![Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules - Image 3](https://m.media-amazon.com/images/I/51OAmVAkkmL.jpg)
![Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules - Image 4](https://m.media-amazon.com/images/I/51sxabHctLL.jpg)
![Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules - Image 5](https://m.media-amazon.com/images/I/51ztmYLImZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Only buy Dr. Clark's Vitamins the cleanest and best.
*by R***W on November 13, 2025*

Miracle vitamin B3 from Dr. Clark best on the market

### ⭐⭐⭐⭐⭐ For a good night's sleep -- Niacin *with the "flush" effect....
*by J***A on December 22, 2016*

I've been having a lot of problems sleeping. My significant other passed away several months ago after 5 years of our intensely battling his illness to slow it down as much as we could. I was waking up several times a night -- not able to fall asleep, etc. I didn't want to go on another prescription and a friend of mine -- who is into more holistic medicine - recommended Niacin at 500 mg. It worked. My sleep is much improved, I still wake up in the middle of the night but now it is only once and I am much more rested when I do get up -- no hangover as I would have had from either over-the-counter sleep aids or prescription ones. PLEASE NOTE: This is Niacin B3 which has not been blended with other ingredients to remove the "flush" that is a body's natural response to Niacin. However, once those neutralizing ingredients, are mixed in, the power of the Niacin is also diminished - and will not produce the aid to sleep you want - if that is what you're taking Niacin for. The "flush", if you are not prepared for it to occur, can have rather frightening physical effects early on in taking it. The effects on subsequent nights fade rather quickly as your body adjusts to it. As I understand it, though I have not researched this well enough to confirm -- one's flush" reaction is because your body is too low on Niacin. The "flush" effect diminshes every night until after several days it is minmal and over time will go away altogther. But you need to be prepared for what you are going to feel the first time -- or it will scare the bejesus out of you. What happens, within about 1/2 an hour, your body starts to turn very red (hence the name "flush" and it keeps getting worse for a while and your skin starts to itch terribly. Again remember -- this severe effect is at it's most extreme the first time you take the pill. The next night is a fraction of the first night's flush. But the first night can be really scary. It can feel like you are having an extreme allergic reaction to the Niacin. But you need to remember - it is not an allergic reaction -- it is just how your body is responding to getting the additional Niacin it needs. The "flush" lasts under an hour and then goes away. The next night it's less so and so on. Within a week or so, you should be able to take the Niacin just before you fall asleep and sleep through the decreasing amount of your body's reaction. Eventually, the "flush" disappears altogether. Once in a while I will feel a bit of th eitching - but that's rarely. However, -- the night's sleep is so incredibly improved -- you will start to feel like a new person. I can't imagine going to bed wihtout it now. If you purchase a version of Niacin that is promoted as "flush-free" you will not get the sleep benefits you are seeking if that is why you are taking the Niacin. To me, "flush-free" is a waste of money and a loss of good nights of sleep. I picked Dr. Clark's version of Niacin after a lot of research. I wanted the purest, most organic form of the drug. Supplements are not government regulated - and as a result, a lot of companies advertise a lot more of the ingredient than their supplements acutally have. The supplemts are often mixed with ingredients that are not the healthiest for you. I don't have proof, but I've researched Dr. Clark's products enough to feel confident that this product is extremely pure and contains, pretty much, the amount of Niacin its label claims. I don't think I would have had such an extreme version of the "flush" the first night, if that weren't the case. *** On an additional note -- you can also purchase a bottle of Dr. Clark's 100 mg Niacin and build up over several days to 500 mg - which will make ht e"flush" less severe at the start -- but you will still feel and you will still have to remind yourself that your body's response to th eNiacin will pass within the hour.

### ⭐⭐⭐⭐⭐ Pure niacin with no fillers.
*by E***O on April 15, 2025*

Purest niacin out there. No fillers. I can take some out of the capsule and it mixes well in liquid. I believe it makes a lot of difference to take the pure form. I’ve noticed the difference. Start slow.

## Frequently Bought Together

- Dr. Clark Niacin 500 (Vitamin B3) Supplement, 500mg, 100 Gelatin Capsules
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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-01-24*