Niacin reviews: what real users say
We read 269 first-hand mentions of Niacin from health and supplement communities. 94 of them say clearly how it went — and 71% of those say it helped.
Where people say it works: mood (71% of 21), energy (93% of 15), anxiety (93% of 14), heart & lipids (85% of 13).
Where it disappoints: blood sugar (only 20% of 5 say better).
Most common complaints: flushing, flush, stomach issues, liver damage, niacin flush. All side effects →
Positive experiences
“If you over methylate, niacin may also help you. Binds to free methyl groups... It's how I fixed my heart palpitations after taking methylsulfonymethan.”
“I take niacin daily and have noticed big improvements in mental clarity / focus.”
“it takes close to 10 grams of niacin a day to tame my symptoms and have me feeling good.”
“I've been megadosing Niacin for a couple of years and anecdotally feel like it's improving my health.”
“Niacin (as nicotinic acid, no relation to nicotine) can also help with NAD (worked for me).”
“I cured it with micro dosing mushrooms, niacin and lions mane (took about 6 months, with 4 days on, 3 days off).”
Negative and mixed experiences
“Been taking Niacin, but other than the flush, I've found it makes me feel kinda irritable after taking it and my stomach doesn't feel great.”
“Had bad flushing w/ the niacin. Felt like I was on fire, massive blotching covered entire body.”
“I have been using niacin (1 gram/3 times a day) for about a month and I do notice an increase in energy when I take it.”
Quotes are verbatim and link to the original public discussion. Information only — not medical advice. How we collect reports