effective
oral
broad-spectrum

course, dose
The doctor put her on a course of antibiotics.

be on, take
Did you remember to take your antibiotics?

be given, receive
Meat from animals that receive antibiotics could not be classified as organic.

administer, give sb, prescribe, put sb on, treat sth with
The doctor prescribed antibiotics.

overprescribe, overuse

antibiotic for
I got an antibiotic for my ear infection.

Antibiotic is used with these nouns:
cream, regimen, resistance, treatment