Hello doctor, My baby is 4 months and 2 weeks oldsince

Patient: Hello doctor,My baby is 4 months and 2 weeks old.since last night I observed little cough during g his sleeping.today morning he was having too much stuffy nose that he was having difficulty in breathing.I took him to paed who is not his regular doc since his regular doc is out of station.the paed has recommended azimax 100 mg/5ml 3.75 ml dose once in a day.along with maxtra drops 2.5ml thrice a day and crocin.I am worried since azimax is antibiotic.So is it safe for baby.I am worried since I am giving antibiotic for first time.ThanksSunita

Doctor: