Question-and-answer feature about dietary intake of amino acids and protein.

citrulline amino acid. citrulline found in the following Zest for Life products.

gaba amino acid. gaba = gamma-aminobutyric acid, is the product of a biochemical

Glutamic Acid (Non-Essential Amino Acid). Considered to be nature's "Brain food"

Physiological effects of creatine during exercise, basic information about the amino acid and its sources, and side effects and adverse reactions.

FDA scientists have confirmed the presence of impurities in some 5-hydroxy-L-tryptophan (5HTP) products currently marketed and widely promoted as dietary supplements. These products are being used as aids for insomnia, depression, obesity, and in children with attention deficit disorder. FDA's analytical results are consistent with those obtained and published by researchers from the Mayo Clinic.

L-ALANINE Alanine is the primary amino acid for the production of usable glucose from glycogen which is stored in your liver. L-Alanine - 50 Capsules, $12.05,

FDA took action to limit the availability of L-tryptophan supplements because of the association between dietary supplements containing L-tryptophan and the 1989 epidemic outbreak of eosinophilia-myalgia syndrome (EMS) in the United States. In the summer and fall of 1989, an epidemic outbreak of eosinophilia-myalgia (EMS) occurred in the United States.

Citrulline. Photograph of Citrulline under the microscope Citrulline

Threonine. Photograph of Threonine under the microscope

Citrulline Elson M. Haas MD (Excerpted from Staying Healthy with Nutrition: The Complete Guide to Diet and Nutritional Medicine)

Article about the potential dangers and ineffectiveness of creatine supplementation.

Basic information about the effects of creatine supplementation.

L-Glutamic Acid 500 mg a day + Amino acid. With alanine and glycine useful in treating prostate problems

Glycine. Glycine is a neutral, genetically coded amino acid. It is the only protein-forming amino acid without a center of chirality.