Unwanted pregnancy in Ecuador is a public health problem. Studies have shown that various psychosocial factors affect risky sexual behavior. Lack of information and poor access to sexual and reproductive healthcare service, an early start to sexual activity, impulsivity, and perceived invulnerability, among others. Interesting results have also been found on the effects that persuasive narrative produce through educational and entertainment videos for changes in attitudes and intention of risky behavior in the area of health. And separately media literacy has been studied as a factor in the level of critical skills used by teens, which makes them more critical in the face of media products that try and convince them of something, but what has not been studied is how being media competent affects their mediation of persuasive arguments in the field of communication on healthcare. The objective of this study is to determine if the level of media literacy mitigates the impact of two videos, narrative and non-narrative, how that impacts their attitude, knowledge, and intentional behavior to prevent unwanted pregnancy, and the perceived vulnerability, counter- argumentation will also be considered, transport and identification with characters as variable mitigating factors. Experimental research will be applied to adolescent women. The results are intended to be used to show the efficacy of the messages in pregnancy prevention videos are key to be considered in healthcare campaigns for sexual and reproductive health in adolescents.