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

Whew... the flush! If you are unprepared for the flush, read up about it FIRST or it will be quite disconcerting. The first time I took this product, I forgot completely that I added it to my morning vitamin mix and then I skipped a few days because I forgot. So Monday morning, I am at work and I take my vitamins with my morning tea, and all of a sudden I start feeling WEIRD... VERY weird. It starts with prickling in your nostrils, that spreads to your cheeks, then ears, which get very hot, then down the neck through your torso and out to your fingers and toes. It is like standing inside the sun... OMG. So I am looking at my secretary who tells me I look a little odd, like I am "pink". Heat is rolling off me in waves I cannot believe she can't feel it from 10 feet away. I AM the sun... My socks are clearly melting around my feet. I contemplate whether I should be worried as this is really very strange, then I start to process the sensations, and consider whether I am having a heart attack ... probably not, pulse is fine, or a stroke... probably not, as I am cogent, just HOT. I wrack my brain thinking I am having an allergic reaction but I haven't eaten anything yet today. So then I remember... OH... The Niacin. I read the reviews, I remembered the "flush". Well, that term does not accurately describe this sensation. It subsides after about 25-30 minutes but lessened some after 15 or so. Whew. That was my fault. So after thinking about it, that wasn't so bad, just different. You can feel that niacin working, coursing through your body. Oh, don't forget the distinctly metallic taste that floods your mouth while this is happening. Now, after a couple of weeks, it seems the flush is diminishing a little but I have decided that I kind of like it. So just be prepared when you try it for the first time if you are not accustomed to this sensation. The product itself is great, I would purchase again.

Per google....What is the most common symptom of niacin toxicity?Severe skin flushing combined with dizziness. Rapid heartbeat. Itching. Nausea and vomiting. Owen, the most freaking out thing was my hands and my feet turned blue. Even my neighbor was freaked out about thatI should have read the reviews.My face started burning my arms and chest and legs and my chest all turned lobster red and was stinging burning hurting along with chills, headache intestinal pains it was terrible. Then when it starts wearing off luckily only my legs were itchy. My neighbor is a pharmacist my husband called her. She came and helped. Had me take ibuprofen and drink a lot of water and get some benadryl.

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.