Niacin is Nitrogen & Oxygen based.. looking into Nitric-Oxide & Niacin connection.

Tryptophan is a precursor to the neurotransmitter serotonin, the hormone melatonin, and vitamin B3.

Niacin chemical compound took me back to this basic chemistry.

CHON

(C) Carbon
(H) Hydrogen
(O) Oxygen
(N) Nitrogen

add sulfur makes 5 basic acids then add 5 base salts to neutralize the acids.

Metal-to-Ligand
Metal Carbonyl

Magnesium
Potassium
Sodium
Zinc
Boron

..

https://en.m.wikipedia.org/wiki/Imidazothiazole