400-mg capsule of L-ornithine improves sleep


9 shares

400-mg capsule of L-ornithine improves sleep


If, every evening before going to sleep, you take a capsule containing 400 mg L-ornithine, the quality of your sleep will gradually improve. You’ll fall asleep faster, sleep more deeply and for longer, and you’ll feel better during the day, write researchers at the Japanese Kirin Company in Nutrition Journal.

Ornithine, sleep and stress

400-mg capsule of L-ornithine improves sleep

L-Ornithine

Kirin is looking for applications for ornithine. This search has been prompted by animal studies in which orally administered L-ornithine had an anxiety reducing effect on mice subjected to stressful situations as a result of its activity in the brain. [Nutr Neurosci. 2011 Nov;14(6):243-8.] What exactly L-ornithine does there is not known. What is known is that it does not inhibit the synthesis of neurotransmitters such as dopamine. [Neurosci Lett. 2012 Jan 11;506(2):287-91.] L-Ornithine supplementation does inhibit the synthesis of the stress hormone cortisol in stressful situations.

Study
In this study the researchers gave two dozen healthy subjects aged 30-60, who had complained in the past of mild work stress and moderate fatigue, a capsule containing 500 mg L-ornithine HCl every day for eight weeks. The amount of L-ornithine in each capsule was 400 mg. The subjects took the capsule before going to bed. A control group took a placebo.

Results
The L-ornithine supplementation [black circles] lowered the cortisol level a little, but had no effect on DHEA synthesis. The cortisol:DHEA ratio improved significantly as a result of supplementation.

400-mg capsule of L-ornithine improves sleep

During the daytime the subjects in the ornithine group felt less hostile and angry. [#1]

400-mg capsule of L-ornithine improves sleep

400-mg capsule of L-ornithine improves sleep

The subjects that took ornithine fell asleep faster and slept more deeply. They scored these aspects of their sleep higher than the subjects in the placebo group did. [#2] In addition, the subjects in the ornithine group slept for longer. [#3]

Conclusion
“Our study suggested that L-ornithine has a positive effect on stress and sleep in healthy workers”, the Japanese wrote. “L-ornithine might be beneficial for people who live a stressful life.”

Source:
Nutr J. 2014 Jun 3;13:53.

More:
Ornithine reduces the bitter taste of BCAAs 25.06.2016
Athletes’ reaction times improve with BCAA-ornithine combo 17.06.2016
Do you sleep badly in the summer? Maybe ornithine can help 06.09.2013

Archives:
Amino Acids
L-Ornithine
Sleep


What's Your Reaction?

confused confused
0
confused
cute cute
0
cute
fail fail
0
fail
hate hate
0
hate
lol lol
0
lol
love love
0
love
omg omg
0
omg
vomit vomit
0
vomit
win win
0
win
Choose A Format
Personality quiz
Series of questions that intends to reveal something about the personality
Trivia quiz
Series of questions with right and wrong answers that intends to check knowledge
Poll
Voting to make decisions or determine opinions
Story
Formatted Text with Embeds and Visuals
List
The Classic Internet Listicles
Countdown
The Classic Internet Countdowns
Open List
Submit your own item and vote up for the best submission
Ranked List
Upvote or downvote to decide the best list item
Meme
Upload your own images to make custom memes
Video
Youtube, Vimeo or Vine Embeds
Audio
Soundcloud or Mixcloud Embeds
Image
Photo or GIF
Gif
GIF format