You're welcome! You can certainly take NAD in pill form but I believe its unclear how much is actually absorbed into the body. NAD is naturally created within the body so I don't believe there's such a thing as "too much". But I haven't researched this, nor taken it in pill form myself. If you're in a large enough city, and can bear the cost, there are home IV services where you can get infusions of NAD and glutathione. I never did the NAD via IV (too expensive) but I did do glutathione.

The niacinamide is helpful because it allows your body to make more NAD on it's own. To get this production back up and running within the body is helpful. So in the beginning anyway, I was taking 1000-2000mg of niacinamide daily, which most doctors would not recommend, but I felt better within 24-48 hours when I started.

I also took taurine (key for nervous system support/balance/health), choline (key for celluar health/function) and tryptophan (mental health/depression/anxiety). Be cautious with tryptophan though -- it shouldn't be taken along with other depression/anxiety meds.