







✨ Unlock your skin’s potential with every tablet 💊
21st Century Niacinamide Mg Prolonged Release Tablets deliver a steady dose of niacinamide in a gluten-free, allergen-safe formula designed for adults. With 110 tablets per bottle, this supplement supports skin and hair health while minimizing stomach discomfort. Highly rated by thousands, it’s a trusted choice for those seeking lasting beauty benefits.













| ASIN | B004SCKMQS |
| ASIN | B004SCKMQS |
| Additives | Gluten Free |
| Age Range Description | Adult |
| Allergen Information | Gluten Free |
| Best Sellers Rank | #19,636 in Health ( See Top 100 in Health ) #577 in Multivitamins Nutritional Supplements |
| Brand | 21st Century |
| Customer Reviews | 4.6 4.6 out of 5 stars (4,994) |
| Customer reviews | 4.6 4.6 out of 5 stars (4,994) |
| Date First Available | 8 August 2012 |
| Format | Tablet |
| Is Discontinued By Manufacturer | No |
| Item model number | 22550 |
| Manufacturer | 21st Century |
| Product Dimensions | 5.08 x 7.62 x 10.16 cm; 0.5 g |
| Serving Recommendation | 1 tablet |
| Units | 110.0 Count |
I**S
It’s amazing for skin and hair
This is really improved my skin and hair, of course I am on healthy diet and I’m taking other vitamins and minerals. my body absorbs it easily no stomach irritation or smell. My hair was good but after this vitamin now I rarely see one two hairs falling per day. I’m sensitive and not any supplement fits me but my body didn’t show any allergic reaction. And delivery was fast.
M**W
This product, les effect than the other brand I used befor
I didn't feel the effect of Nician with a 500 mg concentration.
س**ن
مفيد
H**R
So, wow. Fellow strugglers of proper sleep: perhaps you got to here after learning about the "Healthy Sleep Formula" created by Steve Gibson, as I did. If not, and sleep is an issue for you, I highly recommend you google "Healthy sleep formula" to get to the page on grc .com. That guy has a HUGE following. So much so that when he developed his version 2.0 of the sleep formula and recommend a specific brand of Niacinamide, it sold out everywhere. I knew right then that there must be something to this formula of his. Then he popped back with an update stating that this brand was officially recommended after it had been tested out. I would have never thought that Niacinamide (the amide of nicotinic acid (vitamin B3 / niacin)) + melatonin could be such a magic sleep cocktail. And trust me, at this point I have tried a lot of different supplements. I suffer from the kind of insomnia where you can easily go to sleep, but not remain asleep (sleep-maintaining insomnia disorder)... tossing and turning, rarely getting into deep sleep/REM and waking up everyday feeling pretty exhausted. What a waste of time, honestly. I have been on a long road of finding ways to improve this issue through healthy means, trying my best to avoid actual sleeping pills. Things would work for a bit... then no longer be effective and it would be this endless chase for the next sleep fix. But this formula offered me something new: a combination of 2 time-release pills taken together. It addressed my exact needs. And I am here to say, it works. It WORKS LONG-TERM. I have been doing this formula of time-release Nicinamide and time-release melatonin for several weeks now and its amazing the energy I have now. Many days I wake up about 10-15 minutes before my scheduled alarm for work, have much more vivid dreams, have no issue getting out of bed and out the door, actually feel like going to the gym on my lunch break instead of taking a car nap...it's put me on a great healthy schedule overall and feeling top of my game. I actually look forward to bedtime now. If you do Steve's formula, you have to figure out what is best for you. I will state that I am not a sensitive person and typically need higher dosages of things. In my experimenting I have found that 1250mg of Niacinamide + the 1mg melatonin works best for me to sleep through the night without crossing over into groggy-ville. It is one reason why I like this brand being a lower dosage of 500mg, so I can easily up 1/2 and full dosages cutting the pills. It was very much a goldilocks situation... 1 is too little... 2 is too little... 3 IS TOO MUCH IM IN A HAZE... 2.5 is just right :D So thats my story of Niacinamide and how it's solved my sleep-maintaining insomnia. Pretty amazing, I can't fully believe it yet. Just in case you are wondering the breadcrumb trail of how I got here... it went: friend told me about GABA... and combining with taurine to be more effective. I researched GABA and stumbled on a "sleep hacking through biochemistry" blog... read about all these things to help get you into sleep faster and more lasting, and replacing 5-HTP with tryptophan (but it mentioning a high tryptophan diet might not be healthy so being careful not to use constantly)...blah blah read some reviews on the tryptophan I was getting and mentioning Steve Gibson's healthy sleep formula. His 1st generation formula used a handful of all those aforementioned things till he developed the 2nd gen one. Glad I jumped on board after that point! Its cheap and super effective.
S**R
النياسين مهم جدا للدورة الدموية
S**S
I am giving it 5 star because there is no averse reaction, but not sure it improves skin condition much
T**Y
Great product.
M**R
Em ótimo estado
Trustpilot
3 weeks ago
1 month ago