Produces energy in the body and supports the reduction of ammonia levels. Hypoallergenic. Gluten and casein free. Capsules are plant based. Ultra Tested®. Kirkman’s Alpha-Ketoglutaric Acid is an organic acid that is important for the metabolism of all essential amino acids and the transfer of cellular energy in the citric acid cycle. By itself, alpha-ketoglutaric acid is a strong organic acid, and taking it by mouth can upset the stomach or irritate the oesophagus. Kirkman has solved this problem by blending alpha-ketoglutaric acid with calcium and magnesium salts to produce a “bi-element buffered alpha-ketoglutaric acid” that will not produce excess acidity. This product has a great citrus taste!