Phase 2
![](https://www.kidsbarcelona.org/sites/default/files/styles/large/public/phase_2.jpg?itok=xZhY1UZc)
In this phase patients participation is higher than in phase I (between 100 and 300).
The goal of this phase is to study the effectiveness of a drug in relation to the possible secondary effects and the appropriate dose for the patient. In paediatric patients, this will be performed according to the different age groups.
Edad: