---
product_id: 32326652
title: "Niacin (Vitamin B3) 500mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free"
brand: "nutricost"
price: "€ 33.97"
currency: EUR
in_stock: true
reviews_count: 8
category: "Nutricost"
url: https://www.desertcart.hr/products/32326652-niacin-vitamin-b3-500mg-240-capsules-with-flushing-non-gmo
store_origin: HR
region: Croatia
---

# 500mg potent niacin dose 3rd party tested purity fast release formula Niacin (Vitamin B3) 500mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free

**Brand:** nutricost
**Price:** € 33.97
**Availability:** ✅ In Stock

## Summary

> 🔥 Feel the Flush, Own the Glow 💥

## Quick Answers

- **What is this?** Niacin (Vitamin B3) 500mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free by nutricost
- **How much does it cost?** € 33.97 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/32326652-niacin-vitamin-b3-500mg-240-capsules-with-flushing-non-gmo)

## Best For

- nutricost enthusiasts

## Why This Product

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

## Key Features

- • **Clean & Certified:** Non-GMO, gluten-free, and manufactured in an NSF & GMP certified FDA-registered facility.
- • **Fast-Release Formula:** Experience rapid absorption for quicker effects and that signature niacin flush.
- • **Power-Packed 500mg Niacin:** Maximize your Vitamin B3 intake with a potent dose designed for real results.
- • **Generous 240-Capsule Supply:** Stay stocked for months with a high-count bottle that supports your wellness journey.
- • **Authentic Niacin Flush Experience:** Feel the flush that signals detox and skin revitalization — only for the bold and health-conscious.

## Overview

Nutricost Niacin 500mg delivers a potent, fast-release dose of Vitamin B3 in 240 capsules per bottle. Non-GMO and gluten-free, this supplement is rigorously 3rd party tested and produced in an NSF certified, GMP compliant, FDA registered facility. Known for its signature niacin flush, it supports energy metabolism, skin health, and detoxification, making it a bold choice for professionals seeking a powerful wellness boost.

## Description

Buy Nutricost Niacin (Vitamin B3) 500mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free on desertcart.com ✓ FREE SHIPPING on qualified orders

Review: Product should have a warning label! 😂🙏 - So, I am on a journey to cleanse my by body of toxins from all the junk food I’ve eaten over the years and wanting to change to a healthier lifestyle and came across these pills for ‘flushing toxins’ among a couple other vitamins. I take a pill while heating up some nachos. After about 10-15 minutes I became a bit itchy and felt some prickly/heated areas on my body. Look in the mirror and ears are dark red and forehead bright red. I go outside to get some fresh air and the flushing started…. Immediately went to desertcart to see reviews and it made me panic, instantly (lol). I sincerely thought I was having an allergic reaction, my heart started beating so fast and I became ‘light’ all over my body. As I started to pray (I never do that 😂) I began crunching a Zyrtec!! Shaky knees at this point. I realized it was me who was making my heart race and just needed to calm down! After what felt like an hour I was a little calmed down and the heat was slightly less my arms started to get red and blanching in areas I decided to jump in the shower. After the shower I noticed all the red had subsided from my face, arms and neck. My face actually looked refreshed! While I still feel a sense of heightened-ness I enjoy the refreshed look of my facial skin in the mirror. Lastly, I do think this high of dose should come with a clear warning of the flushing and still a little nervous if I’ll have any additional side effects the rest of today.
Review: Too potent! READ THIS POST 📬 BEFORE BUYING! - I made the mistake of not researching this product before buying. I based my decision on what everybody was writing. After I got the product and I took it I got the flushing and everything as expected but actually, I thought it was much worse than expected. For me, I got all the flushing symptoms worse than expected. It made me feel so dizzy, weak muscles, and thirsty. YES, you get a massive burning feel, worse than I've ever had! Strangely it relaxed all my muscles, made feel like pooping, which I did, rather well, just a healthy poop. The shock on my system made me tired. Do it before bedtime. If you are going to try this product, pls do your research! I always do, but this time I didn't which is dangerous! Unless you are truly suffering from vitamin D3 this product is dangerously potent! FYI for people who aren't good at researching: Vitamin B3 (nicotinic acid, nicotinamide) Vitamin B3 is also known as niacin. There are two forms of vitamin B3: nicotinic acid and nicotinamide What is vitamin B3? Vitamin B3 is also known as niacin. There are two forms of vitamin B3: nicotinic acid and nicotinamide. Why do I need vitamin B3? Vitamin B3 helps release energy from food. It is also involved in the function of the skin, mucous membranes, and nervous system. How much vitamin B3 do I need? The recommended daily allowance (RDA) in the UK (not the USA) of vitamin B3 is 17mg a day for men and 13mg a day for women. This product exceeds regular requirements. Your everyday diet should provide you with all the niacin you need. Nicotinic acid and nicotinamide are both found in food. *******Vitamin B3 cannot be stored in the body, so you must obtain it from your daily diet.********* What happens if I don't have enough vitamin B3? Vitamin B3 deficiency leads to pellagra. Pellagra is characterized by dermatitis and diarrhea. Severe pellagra also causes dementia and is fatal if untreated. ********Pellagra is now rare, but was a major health problem as recently as the 1980s, when it was most commonly seen in communities that consumed a lot of maize.******************************* The vitamin B3 in maize is present in an unavailable form. Where is vitamin B3 found? Vitamin B3 is found in the following foods: bread wheat and maize flour eggs dairy products yeast What are the effects of cooking on vitamin B3? Vitamin B3 is significantly destroyed by excessive exposure to heat and/or water. When cooking, it is important to use fresh food, steam rather than boil and avoid overly long cooking times to preserve vitamins. Do I need to take a vitamin B3 supplement? The Department of Health advises that taking less than 17mg of nicotinic acid supplements a day or less than 500mg of nicotinamide supplements a day is unlikely to be harmful. What are the side effects and safety precautions of taking a vitamin B3 supplement? Vitamin B3 is deemed likely to be safe for most people when taken orally at the required or lower dosage. Commonly reported side-effects of vitamin B3 supplements to include flushing (extreme body heat), tingling, itching or redness of the feet, face, arms and chest; dizziness, temporary weakness, defecating, extreme thirst, tiredness, and headaches. Other minor side-effects of vitamin B3 supplements include an upset stomach, intestinal gas, and mouth pain. The suggested link between stroke risk and vitamin B3 supplements has not been confirmed. What happens if I take too much vitamin B3? *****************Taking over 3g of vitamin B3 a day leads to more serious side-effects, including liver problems, gout, digestive tract ulcers, loss of vision, high blood sugar and an irregular heartbeat.*************** Vitamin B3 has a moderate interaction with the following drugs: alcohol allopurinol (Zyloprim). carbamazepine (Tegretol) clonidine (Catapres) diabetes medications cholesterol-lowering medications primidone (Mysoline) probenecid sulfinpyrazone (Aunturane). Vitamin B3: Eggs are a good source of vitamin B3 as well as protein. Feb 8, 2019, update - I took my vitamin with liquid protein and didn't get any immediate symptoms. I'm still waiting. It's been almost 45 mins. Maybe the key to taking it is taking it with HIGH protein. The flush did come about an hour later. It started with light head tingling and then a stronger burning sensation. Then it became a sunburn like flush throughout my face. It lasts about 40 mins. No body flush. So 2/10/2019 I took another one. At first I thought oh strange nothing. An hour later comes along, head tingling head flush, face flush, massive body flush, muscle weakness, I had to run to the bathroom, loss of bowels (sat on the toilet - i was quite surprised needless to say - cleaned me out well!), weakness was so bad i think i was on the verge of passing out, shut my eyes and leaned against the wall. I got the chills. I was so weak and tired I laid down. Ovaries and tubes felt like they were throbbing and on fire!!! I'm curled up in the fetal position in pain praying it ends. I'm covered in blankets to keep me warm. I guess I fall asleep for about 20 mins. About an hour after it started it all subsided and stopped. I'm very thirsty. I had just got done breakfast (2 eggs and about an ounce of salami) and a little bit of greens protein drink. Two days ago, I had a very potent greens drink with maaca, cocao powder, morninga powder, and homemade kefir. I only got the head flush. After today, I'd need to be super brave to take another tablet. Definitely don't take it before or during work LOL OMG!

## Features

- Potent 500mg of Niacin (Vitamin B3) Per Capsule
- Warning: This Product Will Likely Cause the "Niacin Flush." For Non-Flush, try Niacinamide. Consuming On An Empty Stomach May Increase Flush Reaction
- 240 Capsules of fast release Niacin Per Bottle
- Non-GMO, Gluten Free, 3rd Party Tested
- Manufactured in an NSF Certified, GMP Compliant, FDA Registered Facility

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN  | B01IIDB6JE |
| Best Sellers Rank | #7,064 in Health & Household ( See Top 100 in Health & Household ) #9 in Vitamin B3 (Niacin) Supplements |
| Customer Reviews | 4.2 4.2 out of 5 stars (10,006) |
| Date First Available  | July 15, 2016 |
| Is Discontinued By Manufacturer  | No |
| Item model number  | ZL08078 |
| Manufacturer  | Nutricost |
| Package Dimensions  | 5.28 x 3.07 x 2.99 inches; 6.8 ounces |

## Product Details

- **Brand:** Nutricost
- **Diet Type:** Gluten Free
- **Flavor:** Unflavored
- **Item Form:** Capsule
- **Primary Supplement Type:** Vitamin B3

## Images

![Niacin (Vitamin B3) 500mg, 240 Capsules - with Flushing, Non-GMO, Gluten Free - Image 1](https://m.media-amazon.com/images/I/61c-EJ+HE7L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Product should have a warning label! 😂🙏
*by C***A on November 16, 2024*

So, I am on a journey to cleanse my by body of toxins from all the junk food I’ve eaten over the years and wanting to change to a healthier lifestyle and came across these pills for ‘flushing toxins’ among a couple other vitamins. I take a pill while heating up some nachos. After about 10-15 minutes I became a bit itchy and felt some prickly/heated areas on my body. Look in the mirror and ears are dark red and forehead bright red. I go outside to get some fresh air and the flushing started…. Immediately went to Amazon to see reviews and it made me panic, instantly (lol). I sincerely thought I was having an allergic reaction, my heart started beating so fast and I became ‘light’ all over my body. As I started to pray (I never do that 😂) I began crunching a Zyrtec!! Shaky knees at this point. I realized it was me who was making my heart race and just needed to calm down! After what felt like an hour I was a little calmed down and the heat was slightly less my arms started to get red and blanching in areas I decided to jump in the shower. After the shower I noticed all the red had subsided from my face, arms and neck. My face actually looked refreshed! While I still feel a sense of heightened-ness I enjoy the refreshed look of my facial skin in the mirror. Lastly, I do think this high of dose should come with a clear warning of the flushing and still a little nervous if I’ll have any additional side effects the rest of today.

### ⭐⭐⭐⭐⭐ Too potent! READ THIS POST 📬 BEFORE BUYING!
*by H***L on September 19, 2018*

I made the mistake of not researching this product before buying. I based my decision on what everybody was writing. After I got the product and I took it I got the flushing and everything as expected but actually, I thought it was much worse than expected. For me, I got all the flushing symptoms worse than expected. It made me feel so dizzy, weak muscles, and thirsty. YES, you get a massive burning feel, worse than I've ever had! Strangely it relaxed all my muscles, made feel like pooping, which I did, rather well, just a healthy poop. The shock on my system made me tired. Do it before bedtime. If you are going to try this product, pls do your research! I always do, but this time I didn't which is dangerous! Unless you are truly suffering from vitamin D3 this product is dangerously potent! FYI for people who aren't good at researching: Vitamin B3 (nicotinic acid, nicotinamide) Vitamin B3 is also known as niacin. There are two forms of vitamin B3: nicotinic acid and nicotinamide What is vitamin B3? Vitamin B3 is also known as niacin. There are two forms of vitamin B3: nicotinic acid and nicotinamide. Why do I need vitamin B3? Vitamin B3 helps release energy from food. It is also involved in the function of the skin, mucous membranes, and nervous system. How much vitamin B3 do I need? The recommended daily allowance (RDA) in the UK (not the USA) of vitamin B3 is 17mg a day for men and 13mg a day for women. This product exceeds regular requirements. Your everyday diet should provide you with all the niacin you need. Nicotinic acid and nicotinamide are both found in food. *******Vitamin B3 cannot be stored in the body, so you must obtain it from your daily diet.********* What happens if I don't have enough vitamin B3? Vitamin B3 deficiency leads to pellagra. Pellagra is characterized by dermatitis and diarrhea. Severe pellagra also causes dementia and is fatal if untreated. ********Pellagra is now rare, but was a major health problem as recently as the 1980s, when it was most commonly seen in communities that consumed a lot of maize.******************************* The vitamin B3 in maize is present in an unavailable form. Where is vitamin B3 found? Vitamin B3 is found in the following foods: bread wheat and maize flour eggs dairy products yeast What are the effects of cooking on vitamin B3? Vitamin B3 is significantly destroyed by excessive exposure to heat and/or water. When cooking, it is important to use fresh food, steam rather than boil and avoid overly long cooking times to preserve vitamins. Do I need to take a vitamin B3 supplement? The Department of Health advises that taking less than 17mg of nicotinic acid supplements a day or less than 500mg of nicotinamide supplements a day is unlikely to be harmful. What are the side effects and safety precautions of taking a vitamin B3 supplement? Vitamin B3 is deemed likely to be safe for most people when taken orally at the required or lower dosage. Commonly reported side-effects of vitamin B3 supplements to include flushing (extreme body heat), tingling, itching or redness of the feet, face, arms and chest; dizziness, temporary weakness, defecating, extreme thirst, tiredness, and headaches. Other minor side-effects of vitamin B3 supplements include an upset stomach, intestinal gas, and mouth pain. The suggested link between stroke risk and vitamin B3 supplements has not been confirmed. What happens if I take too much vitamin B3? *****************Taking over 3g of vitamin B3 a day leads to more serious side-effects, including liver problems, gout, digestive tract ulcers, loss of vision, high blood sugar and an irregular heartbeat.*************** Vitamin B3 has a moderate interaction with the following drugs: alcohol allopurinol (Zyloprim). carbamazepine (Tegretol) clonidine (Catapres) diabetes medications cholesterol-lowering medications primidone (Mysoline) probenecid sulfinpyrazone (Aunturane). Vitamin B3: Eggs are a good source of vitamin B3 as well as protein. Feb 8, 2019, update - I took my vitamin with liquid protein and didn't get any immediate symptoms. I'm still waiting. It's been almost 45 mins. Maybe the key to taking it is taking it with HIGH protein. The flush did come about an hour later. It started with light head tingling and then a stronger burning sensation. Then it became a sunburn like flush throughout my face. It lasts about 40 mins. No body flush. So 2/10/2019 I took another one. At first I thought oh strange nothing. An hour later comes along, head tingling head flush, face flush, massive body flush, muscle weakness, I had to run to the bathroom, loss of bowels (sat on the toilet - i was quite surprised needless to say - cleaned me out well!), weakness was so bad i think i was on the verge of passing out, shut my eyes and leaned against the wall. I got the chills. I was so weak and tired I laid down. Ovaries and tubes felt like they were throbbing and on fire!!! I'm curled up in the fetal position in pain praying it ends. I'm covered in blankets to keep me warm. I guess I fall asleep for about 20 mins. About an hour after it started it all subsided and stopped. I'm very thirsty. I had just got done breakfast (2 eggs and about an ounce of salami) and a little bit of greens protein drink. Two days ago, I had a very potent greens drink with maaca, cocao powder, morninga powder, and homemade kefir. I only got the head flush. After today, I'd need to be super brave to take another tablet. Definitely don't take it before or during work LOL OMG!

### ⭐⭐⭐⭐⭐ What you NEED to KNOW about Niacin before you buy
*by W***R on July 14, 2023*

Niacin causes what is known as a "Niacin Flush" if you are not ready for this , it can be very uncomfortable or even scary for some. You will get very hot, your skin will turn red and you will feel prickly. At a dose of 500mg this will be very intense especially for someone who isn't taking Niacin on a regular basis. As far as this product goes I give it 5 stars when you look at the ingredients, the amount of capsules, and the price it's hard to go wrong. I am also a regular niacin user so I am much more comfortable and used to thr Flush of 500mg. If I was new to Niacin I would order the 100mg dose size starting at 500 would be very uncomfortable for most people. If you are looking for a flush free version of Niacin you want Niacinamide. The most important thing you can do is research , Niacin and Niacinamide have some of the same benefits however they both have unique properties , and some of the benefits of Niacine do not carry over to Niacinamide. Make sure you get what's right for you, and If you decide Niacin is what you need, trust me on taking your first dose as a small one so you aren't overwhelmed with a Flush that can me alarming.

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-24*