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21st Century

Niacinamide, Prolonged Release , 110 Tablets

4.6 · 4594 reviews
583 ₽

Energy & Circulatory Support Vitamin Supplement Gluten Free Non-GMO Guaranteed Quality Laboratory Tested Trusted Quality For Over 30 Years Suitable For Vegans Niacin (vitamin B-3) plays a role in energy metabolism. Niacinamide is a good source of vitamin B-3 with a lower flushing effect than that of niacin. Prolonged release vitamins slowly release nutrients into the body over an extended period of time.

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Energy & Circulatory Support Vitamin Supplement Gluten Free Non-GMO Guaranteed Quality Laboratory Tested Trusted Quality For Over 30 Years Suitable For Vegans Niacin (vitamin B-3) plays a role in energy metabolism. Niacinamide is a good source of vitamin B-3 with a lower flushing effect than that of niacin. Prolonged release vitamins slowly release nutrients into the body over an extended period of time.

Customer reviews

4.0
verified purchase
Good basic niacinamide

I have been taking this product for three months and I am very happy with the benefits. It has helped me to support my skin health. I take one capsule a day with a meal and I feel that I have less inflammation, redness and breakouts on my skin. I have not experienced any flushing or adverse effects. This product contains Niacinamide, which is a non-flushing form of vitamin B3. Niacinamide has multiple positive functions in the body, such as supporting the production of energy, the synthesis of fatty acids and cholesterol, the regulation of blood sugar and insulin levels, and the maintenance of cellular health. Niacinamide also acts as an antioxidant, protecting the cells from oxidative stress and free radical damage. Niacinamide has been shown to support joint health by reducing inflammation and cartilage degradation, skin health by improving hydration, elasticity and barrier function, and restful sleep by stimulating neurotransmitter receptors in the brain. This product is high quality, pure and gluten-free. It has 500 mg of Niacinamide per capsule, which is a potent and effective dose. It also comes in vegetarian capsules that are easy to swallow and absorb. The bottle contains 180 capsules, which is enough for six months of use. The price is fair and reasonable compared to other similar products. I would recommend this product to anyone who is looking for a natural and safe way to support their joint health, skin health and restful sleep. It is also suitable for vegetarians and vegans. It is important to consult your doctor before taking this product if you are pregnant, nursing, taking medication or have any medical condition.

8/30/2025
5.0
verified purchase

Niacinamide plays a crucial role in energy metabolism, heart health, and the nervous system. It may support skin health, reduce acne, and improve energy levels. It helps improve skin appearance and increased energy.

12/1/2025
5.0
verified purchase
I like the pill shape

I take so many supplements that are in white caps, all about the same size. If I don't finish the day's supply, I have no idea what they are the next day. These niacinamide are in a nice, small, unique tablet shape that is easy to deal with. Also, I can tell when I've taken this brand. I can slightly feel the niacin even though it's no-flush. I'm very happy with this brand.

11/10/2025
5.0
verified purchase
Good quality Niacinamide

This worked well for what i was using I was using for; taken before bed it can be a very effective supplement to help sleep. It is also very good for skin care health, which is why you often see Niacinamide as a major ingredient in skin care products. Capsule size is good, no issues there, and also niacinamide does NOT cause the flush effect, so if you want some B3 that doesn't flush, this is a good option.

9/12/2025
5.0
verified purchase
Must Be Great For Skin

I heard about niacinamide on a Huberman podcast and I have it for over three months. I picked this brand for their quality and ingredients. I can’t really see the effect — I just hope that my skin became better from the inside. I didn’t have a niacin flush though. However, I have couperouse which means fragile blood vessels and flushed cheeks (it’s not as bad as rosacea but still requires more care) so I decided to switch to collagen peptides as it gives the same benefits for skin but less load on blood vessels

5/25/2025
5.0
verified purchase
Helped With My Acne

Niacinamide plays a crucial role in energy metabolism, heart health, and the nervous system. It may support skin health, reduce acne, and improve energy levels. Some users have reported benefits such as improved skin appearance and increased energy. Each bottle contains 110 tablets, providing a 110-day supply when taken as directed (1 tablet daily).

4/18/2025
5.0
verified purchase
Love it

Cleanse but mostly helps me to keep my skin bright and my face free of pimples and sunburn. My complexion is improving after a serious sunburn keeps me protected now...helps me on my work out supplements since I'm very sensitive to GMO this is a good compromise for me along with Vit C and magnesium

7/21/2019
5.0
verified purchase
Cheap and easy to split doses!

Not totally sure about the effects and benefits yet, but the tablets are tasteless, and I like that I can split them in half in order to have a lower dose that's easier on my system and metabolism. I started taking it because I heard it can be good for energy. I've yet to experience the niacin flush yet, thankfully.

2/13/2026
5.0
verified purchase
Not sure if it works but i take it

Niacinamide is a precursor for NAD+, it's a cheap way to increase NAD. We take 1 tablet daily and we take NMN 2-3 times a week this week we don't have to go through the NMN which is expensive. Does any of this work? I don't know, we just follow the science and hope for the best.

11/18/2025
5.0
verified purchase
great

was looking for time released niacinamide to help my brain heal from pshychosis and schizophrenia. i tried many types of niacinamide. this seems to work better. thet say for therapeutic amount use 2,500 mg a day = 5 regular caps. does help for nervous system. no taste or side effects i could notice. maybe now with time released it will take less. just a couple of days so can't assume for long term. but my body adjust fast since a i med injured from a bad antibiotic called cipro - flouroquinolone toxcity sydrome. that has 8 severe adverse effects/ remarks on the fda.

11/5/2025