LawrenceW and able,
After you take 500 mg of NMN twice a day for a while, have you considered taking only 500 mg of NMN for 8 to 12 weeks to see how blood test results
compare with 1000 mg a day? After all, isn't NMN likely to be similar to NR where NAD+ levels are boosted to around 100% for a month but then come down to 55% or possibly lower?
My guess is that NMN CAPSULES would be very similar to NR, and have a maximum effective dosage of around 1,000 mg per day, as you say.
That is for oral delivered capsules, that are subject to the GI tract and liver, which seems to have an upper limit.
However, I am taking it sublingual (as I believe Lawrence is now also).
My understanding is, a significant portion of each dose is delivered direct to the bloodstream, where it can be utiliized by tissues other than the Liver.
It would be a total shot in the dark to suggest how much of that NMN in the bloodstream gets used elsewhere, before the liver filters it out.
If it is 10%, I think that might imply the hypothetical useful dose might be 1,100.
If you can utilize 50% of the NMN that goes direct to bloodstream, you might increase the maximum useful dosage to 1,500.
But that is just looking at the maximum dosage that is useful for the liver.
I want to constantly provide my bloodstream with the maximum amount of NMN it can utilize. Since there is no idea what that is, I am likely dumping in more than needed.
One last little clue I use on dosage - The NAD+ clinics use 500-700 mg of NAD+ in a drip over 8-10 hours. I would imagine they are using that dosage based on some experience. Some of the research on sublingual absorption show other products achieve around 30% absorption. IF NMN is similar, that would imply a 1,500 to 2,100 mg to match the dosage they are using for NAD+ IV. I don't know if NAD+ and NMN would require similar dosages - just throwing that out.
Just my 2c worth of theory. But I do notice the benefits from more frequent dosages and am too selfish to drop back down to lower amounts/frequency for science sake
Edited by able, 18 July 2018 - 07:09 PM.