What is the difference between dopamine, endorphins and serotonin? For instance the endorphins producing pleasure (or ‘liking’), while dopamine is involved in ‘wanting’ or ‘craving’ for the actual pleasure or ‘liking’. And serotonin is also involved in mood. Serotonin is important for many functions, including sleep, appetite, mood and pleasure. I ★ ‘Wanting’ relates to the expectation and motiv..