Pharmacology of Serotonin or 5-hydroxytryptamine Agonists and Antagonists (Autacoids Part 5) 

Pharmacology of Serotonin or 5-hydroxytryptamine Agonists and Antagonists ( Autacoids Part 5) by Dr. Shikha Parmar
Serotonin is a chemical that has a wide variety of functions in the human body. It is sometimes called the happy chemical because it contributes to wellbeing and happiness. The scientific name for serotonin is 5-hydroxytryptamine or 5-HT. It is mainly found in the brain, bowels, and blood platelets. Serotonin is chemical nerve cells produce. It sends signals between your nerve cells. Serotonin is found mostly in the digestive system, although it's also in blood platelets and throughout the central nervous system. Serotonin is made from the essential amino acid tryptophan.
Description Source: Wikipedia