Page 1 - Reviews - 21st Century, Prolonged Release Niacinamide, 500 mg, 110 Tablets - iHerb
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PK
4.6
Based on 1,454 Ratings
5 Stars
1,100
4 Stars
232
3 Stars
92
2 Stars
17
1 Stars
13
Write a Review

4.6
Based on 1,454 Ratings
5 Stars
1,100
4 Stars
232
3 Stars
92
2 Stars
17
1 Stars
13

Most helpful positive review

iHerb Customer
Posted on Aug 27, 2022
13
0
0
1,223
Excellent!

Cool package. Click here for quality shopping. Fast delivery.

Global reviews (1,454)

Product reviews solely reflect the views and opinions expressed by the contributors and not those of iHerb. iHerb does not verify or endorse any claims made in these reviews. Statements regarding dietary supplements have not been evaluated by the FDA and are not intended to diagnose, treat, cure, or prevent any disease or health condition. Show more
Posted on Mar 28, 2022
71
25
6
176
Verified Purchase
Rewarded Review

Having taken high dose niacin a few years ago and experiencing extreme flushing and discomfort, niacinamide is by far the better choice for me. There is no flushing, hot, prickly sense that comes from it. Not for me. It also helped with my acne, rosacea, and perhaps with my arthritis. Not sure if it helped with menstrual pain. I am taking it in conjunction with retinoids, High quality vitamin C and 35g of gelatine daily. *if this review helped you a little bit, please toss me a like! * Added, 8th May, 2022. Just discovered that this formulation contains MALTODEXTRIN. Why they added it, who knows. I won't be buying this product again, will choose another supplier for my niacinamide.

bb3eaf4a-7ad3-4c65-9fba-aa8d415f45b2
Posted on Sep 17, 2022
33
0
0
2,888
Verified Purchase
Rewarded Review

This vitamin is the best! I started taking it at the start of my new job and after a little while I noticed that I felt much more energy...I no longer felt tired. My mood improved very well and my productivity increased. The vitamin has also made me feel more confident, which encourages me to take more risks (because I know if I can't handle it,

Posted on Mar 8, 2023
17
19
0
2
Verified Purchase
Rewarded Review

Niacinamide or vitamin B3 are the beneficial vitamin for our skin that can help comprehensively rejuvenate the skin. It can help reduce wrinkles and scars caused by acne. It helps reduce redness and irritation on the skin and stimulate the production of ceramide (ceramide) that keeps the skin firm and moisturized. This will result in smoother skin. It is also an ingredient that helps tighten pores and control oiliness on the skin. It is especially suitable for people with oily skin. The price and size of product are very worth and quality.

1c0345e4-1176-44a9-b643-b03fefedfdab
iHerbCustomer
Silver
Posted on Feb 25, 2023
128
0
0
2
Verified Purchase
Rewarded Review

Niacinamide is a nutrient that inhibits the release of fatty acids, and it also activates phagocytic activity and lowers phosphate. It protects against the development of scars in the spinal cord injuries, facilitates recovery from traumatic brain injury, and accelerates healing generally. While it generally supports immunity, it’s protective against autoimmunity.

Posted on Jun 7, 2022
31
0
1
20
Verified Purchase
Rewarded Review

I take it for my skin cancer, my dermatologist recommended twice a day basically for the rest of my life. I am a 61 year old women and not only have the sun lesions reduced but my skin is visibly clearer and the redness on my face has gone. I cant believe it. I am extremely happy with the results.

Posted on Sep 17, 2022
31
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0
2,867
Verified Purchase
Rewarded Review

This product, Vitality, really works. I'm using it to help me achieve my goals and it's making a big difference. It will be hard to find something better than Vitality!

Posted on Sep 17, 2022
31
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0
2,841
Verified Purchase
Rewarded Review

I bought this vitamin to improve my health and well-being. I saw great benefits after a dosage of 10 capsules, they worked like magic.

Posted on Mar 16, 2023
23
0
0
0
Verified Purchase
Rewarded Review

It is a great quality product. it really works as intended. Will definitely get more soon! Thank you so much for this. it was made of high qualiy ingredients. Plus the packaging and sizes were perfect. over all good quality. i love the smell and the looks of it. im looking forward to purchasing another one!

Posted on Mar 1, 2023
14
0
1
2
Verified Purchase
Rewarded Review

I take Niacinamide for sun spots and it really works with regular use. The skin becomes even in color and smoother. Best value for money, because otherwise such preparations are much more expensive. I recommend using together with a cream containing niacinamides for better results. I did not have a niacin flush effect from this product. Also, it works well on the nerves, has a slightly calming effect.

Posted on Feb 22, 2023
33
6
0
0
Verified Purchase
Rewarded Review

I used this supplement combined with cod live oil form the same brand and noticed improvement in my skin especially acne, I also dropped weight but I don’t know if it’s related to this supplement, its does not taste and it’s easy to swallow. The packaging is good. Price is so affordable and cheap given the quantity of it.