was to collect the urine of patients taking it

Do we enough appreciate the “luxury” we are living in?

After Alexander Fleming’s 1928 discovery of a mold that inhibited Staphylococci bacteria growth and the first treatment of a patient with penicillin in 1942, demand for this antibiotic grew rapidly

https://www.mcgill.ca/oss/article/health/dyk-penicillin-used-be-recycled-urine

Penicillin changed the outcome of WW2 [bein ha-yeter][among other factors]