Related Clues:

• Drug that's smoked in a pipe
• Codeine, e.g.
• Prescription number
• Narcotic or sedative
• Morphine. e.g.
• Dentist's number?
• Soporific drug
• Source of codeine
• Heroin source
• Addictive narcotic
• Sleep-inducing drug
• It'll put you under
• Drug that's a downer
• Calming agent
• Poppy-sap drug