Related Clues:

• Codeine, for one
• It was dropped in the 60's
• Trip instigator
• Narcotic
• Narc's find
• Poppy plant derivative
• Downer
• Kind of trip
• What Leary tripped on
• Chloral hydrate, e.g.
• Calmer
• Certain turn-on
• 'Acid'
• Trip promoter?
• Tripper's turn-on