Is it okay to take less dosage of azithromycin?
Patient: Today is the first day I took AZITHROMYCIN Formy sinus infection.  I took 250mg tab at lunch time, and 250mg tab before bed =500mg tab total.  .  I did not realize that the first dosage should have been = 500mg  total.   DO I NEED TO BE CONCERNED ABOUT EFFECTIVENESS? Doctor: Hello,Welcome to HCM,Daily requirement of tab Azithromycin is 500mg, it can taken in divided dose but you should take recommended daily dose of 500 mg.It will have same effectiveness if you take the drug in divided dose,but first dose of 500 mg of azithromycin maintain bacteriostatic levels in the infected tissue for several days.I would suggest you to complete the course of antibiotics as advised by your treating doctor, your symptoms of sinus infection will improve with this excellent antibiotics.Thank you.