Visual signs that a drink has been spiked

A spiked drink may show physical changes, though not always. Warning signs can include:

• Unexpected cloudiness or haze
• A sudden change in color
• Excessive bubbles or fizz
• Separation or layering
• Sediment or residue at the bottom
  

Important: Many spiking substances are colorless and odorless, meaning a drink can look completely normal and still be unsafe.