Is Azithromycin for acne after Accutane an effective treatment?

Hi,last year i got 20mg for 3 months accutane treatment after alot of topical treatments that cleared me up for around an year.Now i started breaking out again and went to me derm again and he has prescribed me azithromycin 500mg for 3 days,then a gap for 5 days and so on for a month.i am 24 with 5'4" and 45kg with persistent acne on cheeks.How much permanent that solution would be in your opinion?

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