Definitions

1. noun

An amino acid that is a precursor in the synthesis of the neurotransmitter serotonin and the hormone melatonin, and is also a component of the urea cycle.

“The researchers studied the effects of ornithine supplementation on mood regulation in patients with depression.”

2. noun

A non-essential amino acid that is a derivative of arginine, found in foods such as meat, fish, and dairy products.

“Ornithine is an important component of a balanced diet, particularly for individuals with high protein needs.”