Life Extension, Vitamin B3 Niacin, 500 mg, 100 Capsules
Items 1-3 of 3 total
Posted by debraananda on Jul 26, 2011
The first 3 times I took this product I produced a really bad rash, I was very red and hot all over, the fourth was a little better, but I have not taken it since
Was this review helpful to you?
Note: iHerb does not imply any medical claims from this review. Disclaimer.
Posted by Reviewer2485668 on Oct 24, 2012
Take With Caution
Posted by Krisinsight on Jan 23, 2015
I received my iherb order yesterday and decided to try the Niacin from Life Extension I had ordered. I wisely dumped half of the capsule out before popping it in my mouth because I have experienced Niacin flushes before.
Nothing happened for about 30 minutes. Since I was feeling okay I then had a cup of hot herbal tea. The flush came on with a bang starting with my face, my neck, my arms and then legs. Then my heart started beating rapidly and my tongue felt slightly swollen and my mouth dried out.
I had the most severe chills (due to heat in my body from the flush) I have ever experienced but I knew I needed to drink water to flush the flush, so with shaking hands I drank water and lots of it. I think about two hours later it was over.
I started researching the dose of 500 mg. On every site I went to 250 mg was considered a high dose and possibly an overdose. Now I wonder why almost everyone in the reviews think that 500 mg is a good dose to take and I see that LE sells a 1000 mg dose capsule as well.
My conclusion: Taking a high dose Niacin is not for me (perhaps the fact that I take thyroid meds accentuate the flush and chills). If I take it again I will not follow up with hot tea and I will only take a very small portion of the capsule.