Patient referring sleeps disorders asks in the Community pharmacy for a non-prescription treatment. Suspecting of a short-term insomnia, she is classified as moderate insomnia by the Insomnia Severity Index. She is recommended to take a non-prescription melatonin-based medicine. Despite referring to being better 2 weeks after the beginning of the treatment, 2 months later the opposite situation is found. After the follow-up, drug-related problems are detected, so she is referred to the Drug Use Review Service founding many Drugs Related Problems. Among these problems, there is found a mistake causing confusion between the melatonin-based medicine and caffeine capsules belonging to his grandchild with whom she lives. Due to the following-up done in the Minor Ailment Service a referral was done to solve many Drugs Related Problems.