HealthyPIG Magazine

Ornithine is an amino acid produced in the body. It is not used to make proteins but plays a role in other processes. It can also be made in a laboratory.
Ornithine may help increase levels of another amino acid called arginine. It may also increase hormone levels, thereby increasing muscle size.
People use ornithine for athletic performance, dry skin, insomnia, wound healing, and other purposes, but there is no good scientific evidence to support most of these uses.