The active ingredients in
Tylenol PM are acetaminophen
and diphenhydramine; the diphenhydramine is an antihistamine
and can be purchased separately (and generically) as a sleep aid from Wal-mart or Walgreen’s very inexpensively; ask the pharmacist to find it for you in the OTC section.
Best of luck to you as you finish up your treatment, and stop in and let us know how things went.