Because of its important role in maintaining vascular health and promoting vasodilation, some have proposed that nitric oxide be regarded as an essential nutrient. I was wondering if anyone could suggest a good dietary source of nitric oxide donors or a nitric oxide donor supplement other than the well-known one of l-arginine?

I think eat more vegetables and fruits. beet juice seems popular, there may be side effects.

I have also heard some good things about glycine propionyl-l-carnitine, but are there any negative side effects?

The human body manufactures NO, so it's technically not an essential nutrient.

 

It's reactive and also toxic in large amounts, so I don't know that "more" is really "better".

 

I say: Maintain an well-rounded diet, and let the human body take care of itself.

But NO production is defective in a lot of disease conditions, such as diabetes, but medicine still doesn't attempt to supplement it, effectively leaving the patients with unresolved vascular problems, so for some patients more NO could be better.