Possible Clues:

• The work I swallowed may be a drug for me
• Drug made from poppy
• After work I had something to eat, and that put me to sleep
• Work on one consumed by drug
• Does it ease pain of operation, I worried?
• Drug given for nothing? Then one's head going round
• At work I took drug
• A sleep-inducing drug
• It may induce relaxation
• Poppy provided the work I consumed