This is the 9911th most frequent Polish word.
antybiotykami
"Antybiotykami" means "antibiotics" in the instrumental plural form in Polish.
Here, 'antybiotykami' (antibiotics) is the instrumental plural form, used to indicate the means or tools of prescribing.
Lekarze przepisują antybiotykami tylko w uzasadnionych przypadkach.
Doctors prescribe antibiotics only in justified cases.
'Antybiotykami' is used in instrumental plural form to describe the method used for treatment.
Zakażenia bakteryjne leczą się antybiotykami.
Bacterial infections are treated with antibiotics.
In this sentence, 'antybiotykami' appears in instrumental plural form to signify the treatment being discussed.