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Naranjo Criteria

The Naranjo Criteria is a tool used by healthcare professionals to determine whether a medication or drug caused a specific adverse effect. It involves a set of questions about the timing, alternative causes, and other factors related to the reaction. Based on the answers, a score is assigned that indicates the likelihood of the drug being responsible—ranging from doubtful to definite. This helps doctors assess safety and make informed decisions about continuing, stopping, or adjusting treatments, ensuring better patient care and safety.