How to Spot Dextromethorphan Misuse: Real Behaviors to Watch For DXM misuse can be easy to miss, but early warning signs often show up in everyday behavior—secretive online orders, unexpected packages, and empty bottles or blister packs hidden in the trash. Teens may also show paranoia, hallucinations, slurred speech, poor coordination, or appear drunk without the smell of alcohol. Because DXM requires large amounts to feel its effects, misuse can escalate quickly. While DXM may seem safe when u