This review examines two emerging psychiatric treatments—ketamine and psilocybin—for treating hard-to-treat mental health conditions in children and teenagers. Both work by affecting brain chemicals differently than traditional medications and can provide rapid symptom relief, sometimes within hours or days rather than weeks. The study found promising results for depression, anxiety, PTSD, and bipolar disorder, though researchers emphasize that more studies are needed to ensure these treatments are safe for developing brains and that careful ethical guidelines must be established.