Cut/pasted from @Jiigzz
Once again, true to style, SNS has released yet another product to its already stellar line-up. L-Ornithine packs a massive punch in the role of an anti-fatigue agent. This ingredient is capable of reducing serum triglyceride levels, increasing free fatty acid levels and ketone bodies, and therefore contributing to the availability of substrates during exercise. Moreover, plasma BCAAs levels are increased during L-Ornithine administration, thus also contributing to the role of energy availability.
To top it off, L-Ornithine reduced circulating levels of Tryptophan, which is an amino acid that has the potential to increase central fatigue through its conversion to 5-HT or serotonin. This likely has ties to the above, as the BCAAs fight for absorption with Tryptophan into the brain and so the more BCAAs you have in the plasma, the greater the likelihood of reducing central fatigue.
These combined effects have been demonstrated in humans where the time to fatigue was reduced with L-Ornithin administration.
However it’s effects don’t stop there. In another double blind crossover and placebo controlled human trial that evaluated L-Ornithine’s effect on sleep quality, it found that it’s use helped reduce stress and improve sleep quality over the course of the trial.
So not only does L-Ornithine help improve performance, it may also assist in your sleep quality and, subsequently, recover.