Life Extension Vitamin B3 Niacin 500 mg – Niacin (Vitamin B3), Supports Heart Health, Promotes cellular energy production – Gluten-Free, Non-GMO – 100 Capsules

Why did you pick this product vs others?:HOLY FLUSH! This product is awesome! I’ve never tried this high of a dose before. The negative comments are hilarious. If you read the bottle and understand how niacin works, then you won’t be surprised at effects you feel from it. Kicked in after about 25-30 minutes, my ears were on fire and I got red splotches all over my body (not just my trunk and face) Prickly, itchy, hot goodness! It’s uncomfortable but I look forward to oddly enough. You know it’s working! I prefer to take at night because it makes me sleep like a baby once the symptoms die down. Will buy again.

BEWARE!! Within 30 min of take I felt like I burst into flames. I was very red from head to toe. My heart was racing and my nose and eyes swelled. So much so that I ended up in the doctors office. I realized the dosage is so high that it caused an allergic reaction. My toes turned purple. This product is more than 3000 times the recommended daily dose, which I did not notice when I bought it. I found I should take 14mg -16mg and this is 500mg. If you want to feel like you were lit on fire from the inside out then by all means try this. Otherwise, do research and find one with correct dosage for your body size.

I’ve been using Life Extension’s Vitamin B3 Niacin (500 mg) and I’m very happy with it. The capsules are gluten-free and made with 100% non-GMO ingredients**, which is important to me.I’ve noticed a boost in energy and overall cardiovascular wellness since I started taking it. The capsules are easy to swallow, and with 100 capsules, it's a great value.If you're looking for a clean, reliable niacin supplement, this one is definitely worth it!

Okay I, like a lot of people discovered niacin watching some of those crazy food documentaries you can find on netflix. I watched "food matters" and there was a lot of talk about niacin. So I looked around and bought this to try out. Now i did a lot if research first and I have to comment on all the negative reviews on this product. most people thought they were having an allergic and they broke out in a red rash or "flush" that felt like pins and needles. (1) a flush is normal with high niacin doses and for some the desired effect. (2) you are not allergic to niacin you simply did not understand what was happening and it is not fair to rate this product with one star because you failed to do your homework. (3)I read a review or 2 that stated they were upset because they got no flush. before I took any niacin I actually read an entire book on... you guessed it, "niacin". It was called "the truth about niacin" which i also got on amazon. After reading it I learned that the less flush you get the more niacin you need. So If you are taking 3000 mg and get nothing than you should prob continue to take it and consider uping the dose. granted i'm no doctor and I have absolutely zero creditably in the medical field and this statement is based solely on the fact, I read a lot and research what ever i'm doing which in this case is taking niacin daily.On to my experience. the first time I took the niacin it was slightly uncomfortable but I was ready for the reaction and I just sat it out. It lasted about 20 minutes then it was gone. After a week the flush was greatly reduced and actually became very pleasant. I also noticed I was in a much better mood, more carefree and had way more energy. After 2 weeks the flush was gone and I had to stop taking it for 3-4 days to get the minimal flush back which for me is the best part. I'm not sure if anyone else experienced this but during my reduced flush all my muscles (I work out)became very sensitive to being massaged. I don't mean this in a weird way. I mean it literally. During my flush my wife would massage my arms legs back chest and it was incredibly relaxing. granted i can only talk my wife into the massage once in a while. I also noticed that while taking this cold symptoms were all most non existent. I have younger kids who bring home every cold known to man and a few times last year everyone in my house was sick and congested except for me. I had only minor symptoms compared to everyone else. I know it could be coincidence but I went a step further and tested the theory. the next time I got sick I stopped taking niacin and within a day I became congested and nasty. So I started taking the niacin again and poof symptoms gone it was like taking dayquil for your symptoms. When my wife saw this she began taking niacin as well. I would love to give it to my kids but they are to young and would not understand or like the flush at all.. So that's my story and im sticking to it.

Todo excelente muchas gracias

Today I learned to always check the comments. This dosage is far too strong for a beginner and niacin flush is terrible. I truly thought I was dying until I read the comments and took an aspirin and laid directly under the air conditioner. I have a chronic pain condition and the flush amplified it, resulting in excruciating pain. Also major fatigue after. I will not be taking this again in any form and I hope this helps someone do their research before taking it. It was my very first and absolute last dose.

I really don't know how to rate this. It is definitely full flush niacin. 500mg seems to be a bit much, I'm surprised they didn't offer a 250mg option considering the extreme flushing reviews. I actually had 2 flushes. One at 30minutes and a second more intense flush 10 hrs later. Research shows it's not abnormal but might have to do with the amount of caffeine I consumed in the interim or the food contents in my stomach. I will probably reencapsulate the powder into smaller doses.

WOW this did NOT work for me...got the the Niacin flush effects and was burning like a fire for over an hour...whew never had a reaction to a supplement like that before..I was a red plum from head to toes it was not great...drank two bottles of water real quick, took some ibuprofen, then a long hot shower and started feeling better within 30 minutes...still hurt but not burning painful..your results may vary as they say...but for me...B3 is a NO GO!!