D-serine is an amino acid found in the brain that activates a type of neurotransmitter receptor called NMDA receptors. NMDA receptors are involved in the formation of new synapses, which are important for learning and memory.
D-Serine is derived from glycine. It is a neuromodulator, meaning it regulates the activities of neurons.
Serine is found in soybeans, nuts (especially peanuts, almonds, and walnuts), eggs, chickpeas, lentils, meat, and fish (especially shellfish). Serine is produced by the body when insufficient amounts are ingested.