In 2020, the US Food and Drug Administration approved liraglutide (glucagon-like-peptide-1-receptor-agonist) as an adjunctive therapy for weight management in adolescents aged 12 to 18 years in combination with a reduced-calorie diet and increased physical activity. The 2023 American Academy of Pediatrics guidelines recommend pharmacotherapy with glucagon-like-peptide-1-receptor-agonist as a second-line therapy in obesity management. Although reports in adults have suggested a link between liraglutide and adverse effects including hepatic injury and acute kidney injury (AKI), these effects have not previously been reported among adolescents treated with liraglutide for weight loss. We present a 17-year-old male who developed AKI and evidence of hepatic injury (significant elevation of hepatic transaminases) after 3 months administration of the lowest dosage of liraglutide (0.6 mg/day) for management of class III obesity. The patient experienced significant loss of appetite, weight loss, and melancholy during the treatment period. One month after discontinuing liraglutide, his mood had improved, his liver enzymes had returned to normal, and AKI had resolved. The Adverse Drug Reaction Probability Scale suggested a high likelihood of a causative association between liraglutide and his symptoms. Our report highlights the importance of vigilance in monitoring for these potential adverse effects among adolescents treated for obesity with any dose of liraglutide.

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