The fourth season of the series marks the first time the Brazilian actress Morena Baccarin acts speaking in Portuguese.
Zécarlos Machado was unavailable to reprise his role in the fourth season so director Selton Mello was convinced by the producers to star in it himself.
In 2009 actor Selton Mello went through a major existential crisis followed by a deep depression. With the help of therapy sessions he had a significant improvement. This experience made him accept better situations in his life and got him to work on this series.
It is a version of the Israeli series BeTipul (2005), created in 2005 by psychoanalyst Hagai Levi, which generated the American version entitled En terapia (2008), the most internationally known.