Gripe water?
I found it, it was always being pushed on me to give to my son, Paregoric.
From an article “”When my children were little, I and everyone I knew kept a bottle of paregoric in the medicine chest. Paregoric was a wonderful liquid that after a few drops gave instant relief from gas pains caused by milk. It also was used to rub on babies’ gums when they were teething.
I never realized it, but one of paregoric’s ingredients is powdered opium. Until the government stepped in, one could go to the drugstore and buy this magical potion over the counter. It no longer is available in the U.S. because of regulations about the use of unapproved drugs.””