Glycine is a conditionally essential amino acid that serves as both an inhibitory and excitatory neurotransmitter. It is the chemically simplest and most omnipresent of all the amino acids. It combines with many toxic substances, converting them to harmless forms which are then excreted.

This amino acid has a calming effect on the brain and is also involved in growth.196-217 Research suggests that glycine may help promote deeper sleep.200,218 Glycine also has a positive impact on attention and memory in adults.219,220 Glycine may also help boost the immune defense system and has oxidative stress regulating effects.221,222

Most people need to take between one to three grams of glycine to be effective. However, most glycine products are only available in 500 mg capsules. That makes taking higher doses cumbersome and costly. However, Life Extension’s glycine comes in either easy-to-swallow 1000-mg capsules or in powder form.

If you have kidney or liver disease, have suffered from a stroke, or are taking the antipsychotic drug clozapine, consult a healthcare practitioner before using this product.