Is L-Ornithine Sleep Quality Randomized Trial safe?

Updated October 2026

Quick Answer

L-Ornithine Sleep Quality Randomized Trial has evidence relevant to safety, limits, and clinician-discussion contexts, but conclusions should stay close to the cited sources. One representative finding is: Although L-ornithine is contained in various foods, the amount is usually small.Recently, studies have shown that orally administered L-ornithine reduced the stress response in animals.From these findings, we speculated that L-ornithine may play a role in the relieve of stress and improve sleep and fatigue symptoms in humans.

Key Takeaways

  • 01Although L-ornithine is contained in various foods, the amount is usually small.Recently, studies have shown that orally administered L-ornithine reduced the stress response in animals.From these findings, we speculated that L-ornithine may play a role in the relieve of stress and improve sleep and fatigue symptoms in humans. [Miyake M (2014)]
  • 02Also, anger was reduced and perceived sleep quality was improved in the L-ornithine group. [Miyake M (2014)]
  • 03Conclusion L-ornithine supplementation has the potential to relieve stress and improve sleep quality related to fatigue, both objectively and subjectively. [Miyake M (2014)]
  • 04Through a randomised, double-blind, placebo-controlled clinical study, we asked if L-ornithine could be beneficial to stress and sleep in healthy workers. [Miyake M (2014)]
The current Migaku evidence database contains 2 reusable source documents for L-Ornithine Sleep Quality Randomized Trial. This answer focuses on safety, limits, and clinician-discussion contexts. - Although L-ornithine is contained in various foods, the amount is usually small.Recently, studies have shown that orally administered L-ornithine reduced the stress response in animals.From these findings, we speculated that L-ornithine may play a role in the relieve of stress and improve sleep and fatigue symptoms in humans. [Miyake M (2014); evidence level 2] - Also, anger was reduced and perceived sleep quality was improved in the L-ornithine group. [Miyake M (2014); evidence level 2] - Conclusion L-ornithine supplementation has the potential to relieve stress and improve sleep quality related to fatigue, both objectively and subjectively. [Miyake M (2014); evidence level 2] - Through a randomised, double-blind, placebo-controlled clinical study, we asked if L-ornithine could be beneficial to stress and sleep in healthy workers. [Miyake M (2014); evidence level 2] - This narrative review discusses the burden of HE, precipitating risk factors, and key clinical considerations for reducing the risk of OHE recurrence in adults with cirrhosis. [Pyrsopoulos Nikolaos T. (2026); evidence level 4] Evidence levels are sorting aids, not final clinical grades. Level 1 usually indicates systematic-review style evidence, level 2 indicates randomized trials or public-health guidance, and lower levels need more cautious wording. This page is educational. People with medical conditions, pregnancy, medication use, or unusual symptoms should ask a qualified clinician before changing supplements, medication, or treatment routines.

Sources

  1. Randomised controlled trial of the effects of L-ornithine on stress markers and sleep quality in healthy workers.
  2. Reducing the Risk of Overt Hepatic Encephalopathy Recurrence: A Narrative Review