The only effect noted is a tendency for loose stools when at 1 gram or more which has limited dosing to <1 gram. And virtually nothing has given me issues with loose stools before so I was surprised...but unhappy with this.
For the past couple of days, I've mixed HPN Niagen with water (and potato starch). That seems to do the trick!
Adding potato starch, because it tastes alkaline. My rudimentary hypothesis: the stool problems are due to the excipients, which cause irritation of the mucosal membrane of the bowel.
HPN Niagen is way less caustic than Thorne Research's NiaCel! But still unusable sublingually. As far as I can tell, others haven't had any issues with sublingual administration. Oddly.
Anyway.
It probably works just as well without potato starch, but thought I'd mention it, since it may make a difference -- regardless of how improbable.
Live Cell Research's Niagan doesn't include excipients. So, I've ordered some, to test my theory.
Interesting conversation on fillers and soft stool. So from what I'm hearing different distributers are using different fillers or amounts, is this correct? From what I'm hearing in todays conversation this filler is an irritant to the mucus membranes. If this is the case are some distributers adding fillers after ChromaDex ships them their product for packaging? Where is the value add? Or is ChromaDex adding a filler before shipping to their distributers? What is the real Nicotinamide Riboside (NR) content to filler ratio from each of the distributers? How much (NR) am I getting in a 125 mg capsule?
These are important questions to me, these seem to be things you guys are implying.
I use the HPN product, I take it sublingually but agree it isn't ideally formulated to use this way. I empty one capsule under the tongue at a time and let the (NR) dissolve out of the filler without moving my tongue around very much. I then add another capsule before the last one has totally dissipated and so on. I've learned to avoid creating a big dry spot. I found when I did, moving my tongue around irritated that spot in my mouth like sand paper. Still done right a small area feels sensitive for a short while afterwards but goes away.
So what I want to know from this conversation, "are the distributers cutting the product?" If so by how much? Also what is this filler? "How mush active ingredient are we receiving?" I will say after my first month where if you've read my posts I had a hard time determining the affects until I stopped taking it, but what I haven't mentioned is when I restarted I resumed taking it sublingually because I'd read a post about it on Longecity, later someone posted this URL link. I felt I needed to increase (NR)'s activity and I have to say I feel more alert after taking it this way. In those early days I also experienced soft stool but it has since passed.
I remember someone saying the sent some Niagen off for testing. Here is that post
"I have gotten some lab results of an analysis of Niagen: exclusive of fillers and excipients, it is abount 90% NR, and 10% niacinamide, plus a trace, around 0.05% methylnicotinate.
This was a surprise, but maybe shouldn't have been given the synthesis procedure."
This test was exclusive of fillers and excipients. What we don't know is how much filler was added and which distributer this material originally came from?