It’s hard to be a fan of tryptophan these days. The essential amino acid oft-blamed for inducing sleepiness after ...

Tryptophan is an essential amino acid required for the synthesis of serotonin, a neurotransmitter that governs mood, appetite, and sleep. Even though tryptophan is present in a variety of foods ...

Tryptophan is an amino acid that's believed to induce sleep. This is because it is a precursor to the sleep-inducing chemicals serotonin and melatonin, in the brain. Tryptophan is present in small ...