Immediate Release

PLAIN NIACIN

500mg (Nicotinic Acid)
PLAIN NIACIN
PLAIN NIACIN
PLAIN NIACIN

Immediate Release

PLAIN NIACIN
500mg (Nicotinic Acid)


Supports the health and functioning of the heart and blood vessels.  

At-a-Glance

  • Promotes heart health & cholesterol balance*
  • Advanced immediate-release formula
  • Helps eliminate skin flushing
  • Formulated to complement doctor-recommended therapeutic lifestyle changes

Product Description

Plain Niacin 500mg Nicotinic Acid is ideal for adults who prefer an immediate-release nicotinic acid formula to support healthy cholesterol balance and lipid metabolism.*

Plain Niacin combines immediate-release nicotinic acid (also known as crystalline niacin) with our proprietary vegetable-based wax matrix. The tablet dissolves more slowly than regular formulas, gradually releasing nicotinic acid in just under one hour rather than all at once. In this way, it delivers heart health benefits without excess skin flushing or digestive upset typical of regular formulas.*

Nicotinic acid is the only form of niacin with targeted benefits for heart health. So-called “flush-free” forms of niacin may reduce flushing, but these forms have not been clinically shown to benefit heart health.

Plain Niacin is available in two strengths – 250 mg and 500 mg – for easy compliance with doctor recommendations.

  • Easy-to-swallow tablets
  • No salt, sugar, starch, preservatives, artificial colors or flavorings
  • Gluten-free
  • Vegan/Vegetarian
  • Free of common allergens (milk, egg, fish, shellfish, tree nuts, peanuts, and wheat)

Frequently Asked Questions

What can you expect?

Plain Niacin is a unique dietary supplement for adults to support heart health. Each tablet releases nicotinic acid gradually in just under one hour to help eliminate skin flushing and digestive upset typical of regular forms. It is specifically formulated to complement doctor-recommended diet and lifestyle changes for overall cardiovascular health.*

How does it work?

In the body, nicotinic acid works by helping to activate numerous biochemical pathways involved in cholesterol and lipid metabolism and whole body cellular health.*

How do you take it? 

As a dietary supplement for adults, take one (1) tablet daily with food. Do not exceed one tablet daily without consulting a physician.

Are there any precautions?

Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking any medications, or are pregnant or nursing. Temporary flushing, itching or warming of the skin may occur. Do not use without the advice of your physician if you consume more than modest amounts of alcohol, have poorly controlled diabetes, liver disease, gout, active peptic ulcer disease, or unstable angina. As with all dietary supplements, keep out of reach of children.

What product quality control tests are performed?

Plain Niacin is manufactured in the United States (Oregon) in a state-of-the-art, FDA-registered facility that meets or exceeds current Good Manufacturing Practices (cGMP). Quality control tests are performed at every stage of the manufacturing process from rigorous raw material testing to finished product testing.


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Providing high-quality
sustained-release supplements
since 1978


Only What You Need

sustained-release

No salt, sugar, starch, artificial colors or flavorings, or preservatives

Easy to Swallow

The shape and size of our tablets make it easy for you to take your supplements

Backed by Science

Backed by a portfolio of
clinical research



Supports the health and functioning of the heart and blood vessels.  

At-a-Glance

  • Promotes heart health & cholesterol balance*
  • Advanced immediate-release formula
  • Helps eliminate skin flushing
  • Formulated to complement doctor-recommended therapeutic lifestyle changes

Product Description

Plain Niacin 500mg Nicotinic Acid is ideal for adults who prefer an immediate-release nicotinic acid formula to support healthy cholesterol balance and lipid metabolism.*

Plain Niacin combines immediate-release nicotinic acid (also known as crystalline niacin) with our proprietary vegetable-based wax matrix. The tablet dissolves more slowly than regular formulas, gradually releasing nicotinic acid in just under one hour rather than all at once. In this way, it delivers heart health benefits without excess skin flushing or digestive upset typical of regular formulas.*

Nicotinic acid is the only form of niacin with targeted benefits for heart health. So-called “flush-free” forms of niacin may reduce flushing, but these forms have not been clinically shown to benefit heart health.

Plain Niacin is available in two strengths – 250 mg and 500 mg – for easy compliance with doctor recommendations.

  • Easy-to-swallow tablets
  • No salt, sugar, starch, preservatives, artificial colors or flavorings
  • Gluten-free
  • Vegan/Vegetarian
  • Free of common allergens (milk, egg, fish, shellfish, tree nuts, peanuts, and wheat)

Frequently Asked Questions

What can you expect?

Plain Niacin is a unique dietary supplement for adults to support heart health. Each tablet releases nicotinic acid gradually in just under one hour to help eliminate skin flushing and digestive upset typical of regular forms. It is specifically formulated to complement doctor-recommended diet and lifestyle changes for overall cardiovascular health.*

How does it work?

In the body, nicotinic acid works by helping to activate numerous biochemical pathways involved in cholesterol and lipid metabolism and whole body cellular health.*

How do you take it? 

As a dietary supplement for adults, take one (1) tablet daily with food. Do not exceed one tablet daily without consulting a physician.

Are there any precautions?

Consult your healthcare professional prior to use if you have or suspect a medical condition, are taking any medications, or are pregnant or nursing. Temporary flushing, itching or warming of the skin may occur. Do not use without the advice of your physician if you consume more than modest amounts of alcohol, have poorly controlled diabetes, liver disease, gout, active peptic ulcer disease, or unstable angina. As with all dietary supplements, keep out of reach of children.

What product quality control tests are performed?

Plain Niacin is manufactured in the United States (Oregon) in a state-of-the-art, FDA-registered facility that meets or exceeds current Good Manufacturing Practices (cGMP). Quality control tests are performed at every stage of the manufacturing process from rigorous raw material testing to finished product testing.

Sustained-Release that Lasts All Day

Phase 1
Phase 2
Phase 3
Phase 4
Phase 5
  • 1st Hour
  • 2nd Hour
  • 3rd Hour
  • 4th Hour
  • 5th Hour
  • 6th Hour


Long Lasting

sustained-release

Releases over time for optimal absorption

Saves You Money

sustained-release

More absorption
= less waste

Inspired by Your Body

sustained-release

Mimics how your body naturally processes food

Reduces Side Effects

sustained-release

Gentle and
gradual release



extended-release

Customer Reviews

Based on 68 reviews
93%
(63)
6%
(4)
0%
(0)
0%
(0)
1%
(1)
C
Charlene Mckechnie
Plain niacin

I have been using niacin from this company for more than 30 years. It does a good job on my cholesterol.

R
Robert Engl
Years of use with good results

I have used this brand of plain Niacin for several decades wihout any problems with good lab results. I just wish you would still sell the larger quantity bottles

D
Daniel Elliott

PLAIN NIACIN

J
Joe Scarce
High quality plain niacin

I’ve been using Endurance Plain Niacin for over 25 years. I’ve found Endurance plain niacin to be effective in helping to control my cholesterol. The product has been high quality and consistent formulation. My only disappointment is that Endurance stopped offering the 600 tablet bottle and purchasing the same amount in 6 100 tablet bottles is much more expensive (I take two a day).

B
Barbara Butler
I

I have been taking this product since the ninth’s and will continue to do so.

Customer Reviews

Based on 68 reviews
93%
(63)
6%
(4)
0%
(0)
0%
(0)
1%
(1)
C
Charlene Mckechnie
Plain niacin

I have been using niacin from this company for more than 30 years. It does a good job on my cholesterol.

R
Robert Engl
Years of use with good results

I have used this brand of plain Niacin for several decades wihout any problems with good lab results. I just wish you would still sell the larger quantity bottles

D
Daniel Elliott

PLAIN NIACIN

J
Joe Scarce
High quality plain niacin

I’ve been using Endurance Plain Niacin for over 25 years. I’ve found Endurance plain niacin to be effective in helping to control my cholesterol. The product has been high quality and consistent formulation. My only disappointment is that Endurance stopped offering the 600 tablet bottle and purchasing the same amount in 6 100 tablet bottles is much more expensive (I take two a day).

B
Barbara Butler
I

I have been taking this product since the ninth’s and will continue to do so.