L-glycine is a conditional amino acid, the body can normally produce enough from other compounds or get it from the diet. L-glycine is one of the simplest amino acids and plays a role in many functions including being an important building block for many chemical and metabolic processes in the body, including as a neurotransmitter. Note: This product is not intended to diagnose, treat, cure, or prevent any disease, nor should supplements be used as a substitute for a balanced diet. Not intended for pregnant/breastfeeding mothers or children under 18. Do not exceed the recommended dose.