iHerb Customer Reviews
Junk or a bad bottle
1 person found the following review helpful
Posted by Reviewer2562513 on May 20, 2012
I have taken as many as nine of these at a time no flush what so ever and these are not flush free. My wife has tried the same amount many times too and nothing. When we take GNC 500 mg we feel a strong flush I am not sure if this was a bad bottle or what but IHerb if you monitor these reviews my wife feels a refund is in order for the amount of business we provide.
Posted by 4816614578323688251 on Dec 07, 2015
It's good for detox, my urine turns into light brownish color..which means it's working
carlson niacin- good stuff
Posted by Reviewer2503494 on Feb 23, 2009
If you take enough, you get the flush to know it's working. I started at one every night, then after a few days increased to two. I had a small flush the first night at this dose, so I continued it for a few more nights, then increased to three. I flushed the first night, but no big deal- it only lasted about an hour and was quite an experience. Continue this schedule to get to your desired dose! It's good stuff!
Posted by Reviewer1770859 on Jun 17, 2009
Be prepared for some flushing, so start slowly. I'm still at 50mg after 3 weeks because of the flushing.
Posted by Reviewer3055813 on Dec 13, 2009
These seem to work well.