'
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 8 Reviews
8.7
Supplement Facts
Serving Size:  1 Tablet
Amount Per Serving
%DV
Niacin
500 mg
3,125%

Most Useful Reviews

10
Pain relief noted
I have a heart problem and experienced pain in my heart. After visiting the hospital for tests and X-rays, they reported that my results were fine. However, after taking niacin, the pain disappeared from the very first day, and I am extremely happy. Thank you, iHerb, for this product, which you provide with genuine interest and sincerity. 👍👍❤
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9.5
Improved cholesterol
Excellent! I have been using 21st Century Niacin Extended Release for several months, and it is an exceptional product. Each tablet has 500 mg of niacin and releases gradually, which helps avoid adverse effects such as migraines or high blood pressure. Since taking niacin, I have noticed positive changes in my health, including lower cholesterol levels and improved metabolism. I recommend 21st Century Niacin Extended Release for heart health.
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8.8
Satisfied results
I take niacin to support heart and nervous system health. I am completely satisfied with the price and quality of 21st Century. Although I hesitated initially, I take two capsules each morning for a month and then have a break. I've been pleased with the results!
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User Reviews

USERS' SCORE
Good
Based on 8 Reviews
8.7
10
Pain relief noted
I have a heart problem and experienced pain in my heart. After visiting the hospital for tests and X-rays, they reported that my results were fine. However, after taking niacin, the pain disappeared from the very first day, and I am extremely happy. Thank you, iHerb, for this product, which you provide with genuine interest and sincerity. 👍👍❤
Read More
9.5
Improved cholesterol
Excellent! I have been using 21st Century Niacin Extended Release for several months, and it is an exceptional product. Each tablet has 500 mg of niacin and releases gradually, which helps avoid adverse effects such as migraines or high blood pressure. Since taking niacin, I have noticed positive changes in my health, including lower cholesterol levels and improved metabolism. I recommend 21st Century Niacin Extended Release for heart health.
Read More
8.8
Satisfied results
I take niacin to support heart and nervous system health. I am completely satisfied with the price and quality of 21st Century. Although I hesitated initially, I take two capsules each morning for a month and then have a break. I've been pleased with the results!
8.8
Cardiovascular aid
My doctor advised taking Vitamin B3 (niacin) for cardiovascular disease as it effectively lowers blood cholesterol levels. I opted for 21st Century due to its affordability, and I am pleased with the results. It's best to take this supplement under a doctor's guidance.
8.8
Nerve calming
My mother takes niacin for her heart pain and high blood pressure. After starting, her nerves calmed down, and her heartbeat no longer troubles her.
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