Nine essential amino acids—histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine—are available only through foods or supplements.

Medically reviewed by Kayla Girgen, RD Creatine is a compound your body naturally makes from the amino acids arginine, ...

Should You Be Taking an Essential Amino Acid Supplement? Here’s What Dietitians Say Roxana Ehsani, M.S., RD, CSSD, LDN April 20, 2025 at 7:05 AM Copied ...

Methionine is found in animal and plant-based foods, in varying amounts. Red and white meat, fish, shellfish, eggs, and some nuts (Brazil nuts, in particular) are high in the essential amino acid.

“L-carnitine is a naturally occurring amino acid derivative that your brain, kidneys, and liver generate from two other amino acids known as lysine and methionine,” says Avery Zenker, RD, the ...

“Creatine supplementation may help improve recovery in the brain and spinal cord after a concussion or spinal cord injury. It ...

News Release 19-Sep-2022 Amino acid supplement key to reproductive health in dairy cows Peer-Reviewed Publication University of Illinois College of Agricultural, Consumer and Environmental Sciences ...

All the latest science news on amino acid methionine from Phys.org. Find the latest news, advancements, and breakthroughs.

“L-carnitine is a naturally occurring amino acid derivative that your brain, kidneys, and liver generate from two other amino acids known as lysine and methionine,” says Avery Zenker, RD, the ...