Related Clues:
- Sleep-inducing drug
- It'll put you under
- Drug that's a downer
- Calming agent
- Poppy-sap drug
- Protein's cousin
- Morphine or codeine
- Heroin, for one
- Morphine or codeine, e.g.
- Religion, to Marx
- Religion, to the masses, per Marx
- Deadening agent
- What might be a knockout?
- A sedative drug
- A poet I become on this drug