🧠Neurotransmission
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← Neurotransmitters

Glycine

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C2H5NO2
⤢ 3D

Glycine is the simplest amino acid and plays a dual role: it is a major inhibitory neurotransmitter in the spinal cord and brainstem, controlling reflexes and motor rhythm, and a required co-agonist at excitatory NMDA receptors in the brain. It thus contributes to motor control and reflex coordination as well as, via NMDA, cognition, and has been studied for effects on sleep quality.

Too little may be associated with

Muscle stiffness, startle disorders

Too much may be associated with

Sedation, reduced reflexes

Informational only — not medical advice.

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Research (21)

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