
Tryptophan
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Tryptophan and L-tryptophan refer to the essential amino acid known for its role in the production of serotonin, an important neurotransmitter for regulating mood, sleep, and other brain functions. Tryptophan is also a precursor to melatonin, which regulates sleep-wake cycles. L-tryptophan specifies the biologically active form of the amino acid....