This product does not cause flushing because it does not work the same way as niacin.

What is flush free niacin used for?

Uses of Niacin Flush Free:

It is used to treat poor blood flow.

What's the difference between flush and no flush niacin?

For example, the body absorbs nearly 100% of nicotinic acid, which raises niacin blood levels to an optimal range in about 30 minutes. In contrast, inositol hexanicotinate (IHN), a “no-flush” niacin, isn't absorbed as well as nicotinic aid (28).