<prompt> Serotonin is also known as?5-hydroxytryptamine 5-HTN-methyl phenylamine3-MethoxytyraminePhenethylamine  <response>: Serotonin is synthesized from Tryptophan Formed by hydroxylation decarboxylation of tryptophan. Synthesis of melatoninin Pineal gland and serotonin Serotonin is a mono-amine neurotransmitter. 5-hydroxytryptophan is also known as Oxitriptan. Melatonin is a product of Tryptophan whereas Melanin is a Product of Tyrosine. 