alanine
Alanine is a non‑essential amino acid present in many protein‑rich foods and synthesized by the body. It plays key roles in protein structure, energy production via the...
View nutrient details →Nutrient type
amino_acid
24 nutrients in this category
arginine
Arginine is a semi‑essential amino acid involved in nitric oxide production, immune function, tissue repair, and urea cycle metabolism. Most people obtain sufficient arginine...
View nutrient details →aspartic acid
Aspartic acid is a non‑essential amino acid, meaning the human body can synthesize it endogenously and typically does not require a dietary intake minimum. It serves as a...
View nutrient details →bcaa
Branched-chain amino acids (BCAAs) are essential nutrients comprising leucine, isoleucine, and valine that the body cannot make and must obtain from dietary protein. They play...
View nutrient details →creatine
Creatine is a non‑essential, nitrogen‑containing compound synthesized mainly in the liver, kidneys, and pancreas and stored in skeletal muscle and the brain. It plays a key...
View nutrient details →cysteine
Cysteine is a sulfur‑containing amino acid that the body can synthesize from methionine but is also obtained from protein‑rich foods. It is essential in the synthesis of...
View nutrient details →glutamic acid
Glutamic acid is a non‑essential amino acid abundant in dietary proteins and produced in the body. It functions as the main excitatory neurotransmitter in the brain, plays a...
View nutrient details →glutamine
Glutamine is the most abundant free amino acid in the body, crucial for gut health and immune function. It is considered conditionally essential when metabolic demand...
View nutrient details →glycine
Glycine is a nonessential amino acid involved in collagen formation, neurotransmission, and antioxidant production. While the body can synthesize it, dietary intake contributes...
View nutrient details →histidine
Histidine is an essential amino acid that humans must obtain from dietary protein to support protein synthesis, histamine production, and the formation of biologically...
View nutrient details →hydroxyproline
Hydroxyproline is a non‑essential amino acid derivative that occurs mainly in collagen and other connective tissues. It is synthesized from proline and is abundant in foods...
View nutrient details →isoleucine
Isoleucine is one of the nine essential amino acids and three branched‑chain amino acids (BCAAs). It must be obtained through diet, primarily from protein‑rich foods like meat,...
View nutrient details →l carnitine
L‑carnitine is a non‑protein amino acid derivative synthesized by the liver and kidneys and obtained from foods, especially animal products. It plays a critical role in fatty...
View nutrient details →leucine
Leucine is one of nine essential amino acids and a member of the branched‑chain amino acids (BCAAs). It plays a central role in muscle protein synthesis, energy metabolism, and...
View nutrient details →lysine
Lysine is one of the nine essential amino acids that humans must obtain from dietary sources. It plays indispensable roles in protein building, immune function, and the...
View nutrient details →methionine
Methionine is an essential amino acid necessary for building proteins, supporting methylation reactions, and producing key metabolites such as cysteine and glutathione. It must...
View nutrient details →phenylalanine
Phenylalanine is an essential amino acid the body cannot produce and must be obtained through diet. It plays critical roles in building proteins and is a precursor to the amino...
View nutrient details →proline
Proline is a non-essential amino acid that the body synthesizes on its own yet obtains from protein-rich foods. It plays a critical role in collagen formation, structural...
View nutrient details →serine
Serine is a non‑essential amino acid synthesized by the body and obtained from dietary protein. It serves critical roles in protein synthesis, brain development, membrane lipid...
View nutrient details →taurine
Taurine is a non‑protein amino acid involved in key physiological processes in the heart, brain, eyes, and muscles. Though the body synthesizes taurine, dietary intake from...
View nutrient details →threonine
Threonine is an essential amino acid that the body cannot synthesize and must be obtained from dietary protein. It plays critical roles in protein synthesis, connective tissue...
View nutrient details →tryptophan
Tryptophan is an essential amino acid involved in protein synthesis and acts as a biochemical precursor for neurotransmitters such as serotonin and melatonin, playing roles in...
View nutrient details →tyrosine
Tyrosine is a nonessential but conditionally essential amino acid produced from phenylalanine and found in protein‑rich foods. It is a precursor for important neurotransmitters...
View nutrient details →valine
Valine is one of nine essential amino acids and one of three branched‑chain amino acids (with leucine and isoleucine). It plays critical roles in protein synthesis, muscle...
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