Granite Male Enhancement localized blood flow with nitrogen and the real cool thing with nitrogen viewers at home is that it's very long-lasting so things like citrulline citrulline malate arginine will boost nitric oxide Ferb I don't know let's say a couple of hours tops nitrogen has been shown to boost nitric oxide levels for up to 14 days after you take it so very long lasting effects in terms of the clinical dose of nitrous regime to get these effects we're looking at a 1,000 milligram dose we've got 750 milligrams in a full scoop serve of this Rhino black so it is slightly ever so slightly under dosed moving right along we then get into El ornithine in a 750 milligrams dose and an amino