PURPOSE: Whilst formal coercion in psychiatry is regulated by legislation, other interventions that are often referred to as informal coercion are less regulated. It remains unclear to what extent these interventions are, and how they are used, in mental healthcare. This paper aims to identify the attitudes and experiences of mental health professionals towards the use of informal coercion across countries with differing sociocultural contexts. METHOD: Focus groups with mental health professionals were conducted in ten countries with different sociocultural contexts (Canada, Chile, Croatia, Germany, Italy, Mexico, Norway, Spain, Sweden, United Kingdom). RESULTS: Five common themes were identified: (a) a belief that informal coercion is effective; (b) an often uncomfortable feeling using it; (c) an explicit as well as (d) implicit dissonance between attitudes and practice-with wider use of informal coercion than is thought right in theory; (e) a link to principles of paternalism and responsibility versus respect for the patient's autonomy. CONCLUSIONS: A disapproval of informal coercion in theory is often overridden in practice. This dissonance occurs across different sociocultural contexts, tends to make professionals feel uneasy, and requires more debate and guidance.