Participants in this group (all participants) are asked to complete a questionnaire and then receive access to the online gatekeeper training (e-learning) during three days, after which they were asked to complete another questionnaire. After three months, a third questionnaire is sent.

The gatekeeper training consists of an interactive e-learning (min. 1h, max. 3h) which includes theoretical knowledge, tips, exercises and relevant examples and cases. The main topics included in the e-learning are:

• Background information on suicide in Flanders (rates)
• Definitions and theoretical background (suicidal process, integrative explanatory model of suicide)
• Debunking existing myths about suicide
• The role of the pharmacist in suicide prevention
• Signal Recognition
• Talking about suicide and suicidal thoughts (start the conversation)
• How and to whom to refer as pharmacist or FTA
• Medication management and medication in the context of suicide
• Rights and obligations of a pharmacist/PTA in the context of suicide prevention
• Self-care

The ATTS is a 37-item to be scored on a 5-point Likert scale (1= disagree completely to 5 = agree completely) to measure participants' attitudes towards suicide.

The Measurement of Perceived Self-efficacy is a 10-item self-report questionnaire to be scored on a 4-point Likert scale (1= Completely false to 4 = completely true)

Age, Gender, Years of work experience

At baseline: motivation to participate (9 options), previous trainings (yes/no, specify if yes) At baseline and post-test: experience with suicidal patients (contact and confidence; 5 point Likert scale), knowing what to do or who to refer to (5-point Likert scale), knowing where to find information (5-point Likert scale), which actions previously taken in case of suicidal patient (list of 12), to who do you refer (5 options)