Suggest Treatment For Blisters On Penis

sir good moring. i was sufferig from cold, coughing and doctor advise me- Tablet Ciprocin 500 mg (1+0+1) x 5 days, Tablet Vantolin 2mg (1+1+1) x 3 days, Tablet Prednisolone 5 mg(2+0+2) x 3 days and Tablet Ranitidine 150 mg (1+0+1) after 7 days. But problem is after taking all these medicine for one day I found there are blister in my penis. Immediately I called MY DOCTOR and he advise me to stop Ciprocin Tablet . he also advise to take Oradaxon Injection 10 mg in the vein and Capsule Azithromycin 500 mg (0+0+1) for 5 days. I am facing serious problem. please help me