Objective: The internet and social media, which have become a part of daily life, have also become critical sources for obtaining health information. Anyone can upload videos on any topic on Youtube; however, Youtube does not guarantee that the uploaded videos contain the correct information. Failure to use or the misuse of epinephrine auto-injectors (EAIs) can lead to fatal results. The aim of this study was analyze the reliability, understandability, and actionability of the videos on the use of epinephrine auto-injectors published on Youtube.

Materials and Methods: The search term `how to use epinephrine auto-injectors` was searched on YouTubeTM (http://www.youtube. com) on 04.10.2022 and the first 200 videos were reviewed. Information about the video was recorded and the Global Quality Scale (GQS), DISCERN (DISCERN is a brief questionnaire that provides users with a valid and reliable way of assessing the quality of written information on treatment choices for a health problem) and Patient Education Materials Assessment Tool (PEMAT) were evaluated.

Results: Of the 112 videos, 86.6% of those included in the study were educational for the public. The duration of understandable videos was found to be significantly higher than non-understandable videos (p<0.001). A moderately positive correlation was found between the GQS scores and understandability scores (p<0.001) and between actionability scores (p<0.001). A moderately positive correlation was found between the DISCERN scores and understandability (p<0.001) and actionability scores (p<0.001). The understandability rate of the videos uploaded by physicians and non-physician health workers was found to be significantly lower than the other video uploaders (p<0.01). In the performed linear regression analysis, it was seen that the number of understandable videos published by physicians and non-physician healthcare professionals was significantly lower than the videos uploaded by other users. The number of understandable videos was significantly higher in long videos.

Conclusion: There are severe problems regarding the videos` quality, reliability, understandability and actionability. It is thought that Youtube content on the use of EAIs in case of anaphylaxis should be improved.