I haven’t tried Niacin on its own but I’ve had other supplements containing niacin and have noticed with foods high in niacin, that yes, it works to elevate mood. I think it induces a sense of calm energy.
@Hitta Considering how many things are fortified with calcium, and how my friend never had any issues with this before taking magnesium supplements, I think low calcium is unlikely to have been the problem in any of these cases.