clarithromycin have same side effects with erythromycin

My 4yrs. old son is presently taking paracetamol forte for his fever,E-Zinc Syrup, Nasal spray        (Sodium Chloride,Muconase) and he was also prescribed w/ clarithromycin (5ml/twice a day for 7days).That is to threat his lumps behind his neck due to phlegm.

Apprently,my good freind died because of erythromycin.My freind died after taking erythromycin due to steven johnson's syndrome as side effect.

After reading the label of clarithromycin and found out that it can possibly cause steven johnson's syndrome i didn't give any to my son.I want to make sure first of it's side effects and relation to erythromycin.I want my son to feel better but I'm so scared to give him this medicine with what happen to my freind.What should i do?

Is it safe for him to take clarithromycin with the other medications he's taking?

Pls kindly send reply on my email address.

Thank you....