Related Clues:

• Tranquilizers
• They may put you to sleep
• Pain relievers
• Rest inducers
• Sleep-inducing drugs
• Sleep inducers
• Some anodynes
• Pain killers
• Soporifics
• Poppy products
• Morphine and codeine, for two
• Some soporifics
• Oxycodone et al.
• They may knock you out
• Heroin and the like