Messengers
Chemical messengers are important substances in the body, primarily becaue they fulfil the task of exchanging information between cells and thus transmitting signals. Hormones and neurotransmitters are two well-known messengers produced by the body. 5-HTP, GABA and melatonin fall into this essential category.
5-HTP
5-hydroxytryptophan (5-HTP) is non-proteinogenic, but the direct precursor of the neurotransmitter serotonin.
Melatonin
Melatonin is an endogenous hormone that is produced from the amino acid L-tryptophan via the intermediate 5-HTP in the pineal gland and, to a lesser extent, in the retina and intestines. Melatonin production and release is light-dependent, with darkness stimulating melatonin production and release, while daylight and blue screen light inhibit it. The release of melatonin initiates the regeneration phase and falling asleep and is responsible for the deep sleep phase. Melatonin helps to shorten the time it takes to fall asleep and to alleviate jet lag.
