Last update
3/17/2026
Reviewed By
Overview
SCIENTIFIC SCORE
No researches found
N/A
USERS' SCORE
Good
Based on 10 Reviews
8.4
Supplement Facts
Serving Size: 1 Tablet
Amount Per Serving
%DV
Niacin
500 mg
3,125%
Most Useful Reviews
9
Vascular health improved
23 people found this helpful
Effectively available and indispensable for health. It has an excellent vasodilator effect, removes atherosclerotic plaques, and lowers cholesterol and blood sugar! In the form of niacin, it causes redness and tingling, but in other forms, these sensations are absent. My parents take it regularly, and it has increased their vessel lumen and alleviated vascular spasms, restoring oxygen supply to tissues and reducing hypoxia. I also provided arginine to enhance its effects, which helps relax blood vessels. While the face may tingle and redden, this is a normal sign of vasodilation and indicates effectiveness.
Read More
9
Allergies relieved
4 people found this helpful
I recommend this product! I started with 100mg in January and gradually increased my dosage. Initially, I felt frustration, but now I rise smoothly in the morning. My hay fever symptoms are significantly milder this year. I began taking niacin for its effects on lowering cholesterol and alleviating allergies, and I'm thrilled with the results. My cholesterol continues to decrease. The pills are convenient and small, though they can stick to the tongue, making swallowing difficult. It's better to take them with ample water.
Read More
9
LDL cholesterol lowered
1 people found this helpful
I started with 100mg of niacin, increasing to 250mg in separate doses for a total of 750mg. My doctor advised starting medication if my next test did not show lowered cholesterol. However, I managed to pass the test multiple times without needing medication.
Read More
User Reviews
USERS' SCORE
Good
Based on 10 Reviews
8.4
- All Reviews
- Positive Reviews
- Negative Reviews
9
Vascular health improved
23 people found this helpful
Effectively available and indispensable for health. It has an excellent vasodilator effect, removes atherosclerotic plaques, and lowers cholesterol and blood sugar! In the form of niacin, it causes redness and tingling, but in other forms, these sensations are absent. My parents take it regularly, and it has increased their vessel lumen and alleviated vascular spasms, restoring oxygen supply to tissues and reducing hypoxia. I also provided arginine to enhance its effects, which helps relax blood vessels. While the face may tingle and redden, this is a normal sign of vasodilation and indicates effectiveness.
Read More
9
Allergies relieved
4 people found this helpful
I recommend this product! I started with 100mg in January and gradually increased my dosage. Initially, I felt frustration, but now I rise smoothly in the morning. My hay fever symptoms are significantly milder this year. I began taking niacin for its effects on lowering cholesterol and alleviating allergies, and I'm thrilled with the results. My cholesterol continues to decrease. The pills are convenient and small, though they can stick to the tongue, making swallowing difficult. It's better to take them with ample water.
Read More
9
LDL cholesterol lowered
1 people found this helpful
I started with 100mg of niacin, increasing to 250mg in separate doses for a total of 750mg. My doctor advised starting medication if my next test did not show lowered cholesterol. However, I managed to pass the test multiple times without needing medication.
Read More
7.5
Wellbeing improved
1 people found this helpful
Excellent! I have used 21st Century Niacin Extended Release for several months, and it is a fantastic product. Each tablet contains 500mg of niacin released gradually, averting "migraines" or "high blood pressure" associated with regular niacin. I have observed improvements in my overall health and cholesterol levels since starting. Though reactions to niacin can differ, I suggest beginning with small doses and consulting a doctor. Overall, I recommend this for heart health and wellbeing.
Read More
7.5
Metabolism improved
10 people found this helpful
Decent B3! Vitamin B3 or PP is essential for many bodily functions. It normalises tissue growth, improves fat cell metabolism, reduces cholesterol, and converts sugars and fats into energy. With adequate vitamin PP, the gastrointestinal tract operates efficiently. It combats inflammation, enhances digestion, and improves gastric juice production. Furthermore, it positively impacts the pancreas and liver and is critical in synthesising haemoglobin and red blood cells. Notably, the "flash effect" of reddened skin is not an allergy and indicates a sufficient dose.
Read More
Frequently Asked Questions
7.5
Cholesterol levels improved
2 people found this helpful
Niacin, or vitamin B3, is crucial for lowering cholesterol levels and improving circulation in the body. After a month of taking this vitamin, my cholesterol indicators have greatly improved.
9
Allergies relieved
4 people found this helpful
I recommend this product! I started with 100mg in January and gradually increased my dosage. Initially, I felt frustration, but now I rise smoothly in the morning. My hay fever symptoms are significantly milder this year. I began taking niacin for its effects on lowering cholesterol and alleviating allergies, and I'm thrilled with the results. My cholesterol continues to decrease. The pills are convenient and small, though they can stick to the tongue, making swallowing difficult. It's better to take them with ample water.
7.5
Doctor's recommendation
1 people found this helpful
Vitamin B3 (niacin) has been recommended by my doctor for cardiovascular disease. It effectively lowers blood cholesterol levels. I chose 21st Century due to its affordability and am satisfied with the results! However, it's best to take this supplement as directed by a doctor.
7.5
Metabolism improved
10 people found this helpful
Decent B3! Vitamin B3 or PP is essential for many bodily functions. It normalises tissue growth, improves fat cell metabolism, reduces cholesterol, and converts sugars and fats into energy. With adequate vitamin PP, the gastrointestinal tract operates efficiently. It combats inflammation, enhances digestion, and improves gastric juice production. Furthermore, it positively impacts the pancreas and liver and is critical in synthesising haemoglobin and red blood cells. Notably, the "flash effect" of reddened skin is not an allergy and indicates a sufficient dose.
9
Vascular health improved
23 people found this helpful
Effectively available and indispensable for health. It has an excellent vasodilator effect, removes atherosclerotic plaques, and lowers cholesterol and blood sugar! In the form of niacin, it causes redness and tingling, but in other forms, these sensations are absent. My parents take it regularly, and it has increased their vessel lumen and alleviated vascular spasms, restoring oxygen supply to tissues and reducing hypoxia. I also provided arginine to enhance its effects, which helps relax blood vessels. While the face may tingle and redden, this is a normal sign of vasodilation and indicates effectiveness.
7.5
Wellbeing improved
1 people found this helpful
Excellent! I have used 21st Century Niacin Extended Release for several months, and it is a fantastic product. Each tablet contains 500mg of niacin released gradually, averting "migraines" or "high blood pressure" associated with regular niacin. I have observed improvements in my overall health and cholesterol levels since starting. Though reactions to niacin can differ, I suggest beginning with small doses and consulting a doctor. Overall, I recommend this for heart health and wellbeing.
9
LDL cholesterol lowered
1 people found this helpful
I started with 100mg of niacin, increasing to 250mg in separate doses for a total of 750mg. My doctor advised starting medication if my next test did not show lowered cholesterol. However, I managed to pass the test multiple times without needing medication.
Data last updated:
